# You know tangentTheta=h/4 take the derivative sec^2 Theta * dTheta/dt= 1/4 dh/dt you know dtheta/dt solving for dh/dt You know sec Theta from the right triangle: sec theta = sqrt(h^2 +16) /h check me. Georgina: in the future, please put

10,204 results
1. ## Help! Urgent!

You know tangentTheta=h/4 take the derivative sec^2 Theta * dTheta/dt= 1/4 dh/dt you know dtheta/dt solving for dh/dt You know sec Theta from the right triangle: sec theta = sqrt(h^2 +16) /h check me. Georgina: in the future, please put the title in the

asked by bobpursley on November 5, 2006
2. ## Related rates,...again

I also have another question (I'm not doing too good one these realted rates). A camera, located 2 km from the launch pad, is tracking the rocket that is fired straight up. When the height of the rocket is 20 km, the camera is rotating at the rate of 1/200

asked by Tracy on November 2, 2006
3. ## Math

Officer Weihe is in a patrol car sitting 25ft from the highway and observes Jacob in his car approaching. At a particular instant, t seconds, Jacob is x feet down the highway. The line of sight to Jacob makes an angle of theta radians to a perpendicular to

asked by Crain on November 17, 2013
4. ## Calculus

How do you prove area of a circle? Integrate an incremental area dArea = r dr dTheta from r=0 to R, and Theta from zero to 2PI radians. Area= INT INT dTheta rdr dTheta Area= 2PI (1/2 R^2)= PI R^2

asked by Abigail on March 1, 2007
5. ## rate of change

A missile rises vertically from a point on the ground 75,000 feet from a radar station. If the missile is rising at the rate of 16,500 feet per minute at the instant when it is 38,000 feet high, what is the rate of change(in radians per minute) of the

asked by Jen on December 10, 2006
6. ## Calculus

Solve the integral: (1-x^2)^(3/2)/x^2 This is what I have so far. I used trig substitution. x=sin theta dx=cos theta dtheta [1-(sin^2 theta)^(3/2)]*[cos theta dtheta]/(sin^2 theta) [(cos^3 theta)]*[cos theta dtheta]/(sin^2 theta) (cos^4 theta)/(sin^2

asked by Mike on September 23, 2018
7. ## math

Evaluate the integral upper limit 7pi/4 and lower limit 5pi/4 of 10 csc theta cot theta dtheta

asked by gita on September 10, 2013
8. ## More related rates.

Heyy, its me again. So last night I asked a related rate question, and I think I still don't get it. I tried it a few differnt ways and I think I'm just missing something...I don't think a speed of a rocket can be 0.018km/hr:S. So heres what happened: A

asked by Tracy on November 3, 2006
9. ## Calculus

Finding critical numbers g(theta) = 16(theta) - 4tan(theta) I can only get the derivative of g to be g'(theta) = 16 - 4sec^2(theta). Am I supposed to move on to get sec^2(theta) = 4, then sec(theta) = 2?

asked by Justin on October 4, 2015
10. ## calculus

If the hands on a clocktower's clock are 2ft and 3ft long, how fast is the distance between the tips of the hands of the clock changing at 9:20? I know that the derivative of the minute hand is pi/30 rad/min and derivative of the hour hand is pi/360

asked by nico on November 11, 2012
11. ## math;)

What is a simplified form of the expression (sec^3 theta) - (sec theta/cot^2 theta)? a. 0 b. sec theta-tan theta c. cos theta d. sec theta***** Every time I attempt to work out this problem I end up with one. I know the answer is sec theta, but I do not

asked by girly girl on April 27, 2018
12. ## math;)

Julia wants to simplify the term sec^2 theta-1/cot^2 theta+1 in a trigonometric identity that she is proving. Which of the following identities should use to help her? Select all that apply. (2 ANSWERS) a. sin^2 theta+cos^2 theta=1 b. sec^2 theta-tan^2

asked by girly girl on April 23, 2018
13. ## calc

If D is the solid region in the first octant bounded above by the paraboloid z = 1 − x2 − y2 and below by the xy-plane, the volume of D is: so i set this up integrating over dz dr dtheta and got pi/2 but the answer i spi/8

asked by rebecca on December 7, 2014
14. ## Pre-Calculus

Which is the polar form of the parametric equations x=5cos(theta) and y=5sin(theta) ? a. r= 5(theta) b. r= 5 c. r= 25 cos (theta) sin (theta)***** d. r= 25cos^2 (theta) + 25sin^2 (theta) Which is the polar form of the parametric equations x=4t and y=t^2?

asked by Vsuf on May 22, 2018
15. ## Calculus 2

Write in cartesian form: r=3tan(theta)sec(theta) im working with this function here, trying to get an rcos(theta) and/or rsin(theta) so far, i am stumped. what i have so far: r^2=3r(tan(theta)sec(theta)) (x^2+y^2)=?????

asked by Mike on April 27, 2011
16. ## differentiate

A = 1/2 ab Sinè How is dA/dt related to da/dt, db/dt and dè/dt dA/dt= 1/2 b SinTheta da/dt + 1/2 a SinTheta db/dt + 1/2 ab cosTheta dTheta/dt This is a U = xyz form dU/dt= xy dz/dt + ...

asked by Jen on December 9, 2006
17. ## trig

Write each identity expression in terms of:1. cos theta= a. sin^2theta ---------- sec^2theta-1 2. tan theta= a. sec theta over sin theta minus sec theta over cosecant theta.

asked by san-san on October 20, 2008

1.) which of the following represents dy/dx when y=e^-2x Sec(3x)? A.3e^-2x sec(3x) tan (3x)-2e^-2x Sec(3x)

asked by anon on March 7, 2011
19. ## Calculus PLEASE check my work ,

1.) which of the following represents dy/dx when y=e^-2x Sec(3x)? A.3e^-2x sec(3x) tan (3x)-2e^-2x Sec(3x)

asked by anon on March 12, 2011
20. ## Math

if sin theta =1/2 and cos theta= √(3)/2. find tha values of tan theta, cot theta and csc. This question didn't ask for sec, but i am just curious what the answer for sec, can someone show me the answer for sec

asked by anonymous on March 7, 2019
21. ## Precalculus

Circle O below has radius 1. Eight segment lengths are labeled with lowercase letters. Six of these equal a trigonometric function of theta. Your answer to this problem should be a six letter sequence whose letters represent the segment lengths that equal

asked by Human on September 24, 2016
22. ## trig

Hi there! I NEED SERIOUS HELP, PLEASE!!! i have such a hard time with verifying identities! The question is: [(sin(theta/2)) / csc(theta/2)] + [(cos (theta/2) / sec(theta/2)] = 1 I have a few ideas on how to solve this, but am mainly not sure how to get

asked by stephani on June 11, 2014
23. ## math

I have a question I have been working on since yesterday and I am not making this up. I couldn't get the right answer. If sin theta = -2/3, which of the following are possible? A: cos theta= -the sqr rt of 5/3 and tan theta =2/3. B: sec theta = 3/the sqr

asked by lisa on November 21, 2013
24. ## physics

How do you calculate radial force? Just to qualify, I am given a radial acceleration. If you are given the component of the acceleration in the radial direction, then you need to multiply that by the mass. If you are given the time dependence of the

asked by Sam on November 21, 2006
25. ## Math

solve sin(theta)=-1 for all real values of (theta) I don't understand but by following the example in my book; sec(theta)=-1 from the pattern of the secant function, sec(theta)=-1 if theta=pi*n, where n is an odd integer. There is no example of sin.

asked by House on October 2, 2008
26. ## Calculus

Two sides of a triangle have constant lengths a and b, and the angle between them is theta. What value of theta will maximize the area of the triangle? so far i have the formula and the derivative. A=.5absin(theta) A'=.5abcos(theta) then i set the

asked by Nathaniel on October 26, 2008
27. ## math-calc

Two sides of a triangle have constant lengths a and b, and the angle between them is theta. What value of theta will maximize the area of the triangle? so far i have the formula and the derivative. A=.5absin(theta) A'=.5abcos(theta) then i set the

asked by Nathaniel on October 26, 2008
28. ## Math (Right Triangle Trig)

Suppose tan(theta)=5/7 and theta belongs to Quadrant III, find the exact value of sec(theta)? I already took the steps to solve this problem but I am confused if whether or not sec(theta)is positive or negative sqrt(74)/7 Any help is greatly appreciated!

asked by Giovanni on June 5, 2016
29. ## Precalculus(NEED HELP ASAP PLEASE!!)

cot(theta)= 3 pi < theta < 3pi/2 Find: sin(theta)= -1 ? cos(theta)= -3 ? tan(theta)= 1/3 ? sec(theta)= -1/3 ? csc(theta)= -1 ? That's what I came up with, but they are not correct, PLEASE help me where I went wrong!!

asked by jh on March 28, 2010
30. ## trig

If sin theta is equal to 5/13 and theta is an angle in quadrant II find the value of cos theta, sec theta, tan theta, csc theta, cot theta.

asked by Julise Alliance on February 28, 2013
31. ## Calculus

I wanted to confirm that I solved these problems correctly (we had to convert the polar curves to Cartesian equations). 1.rcos(theta)=1 x=1 2.r=2*sin(theta)+2*cos(theta) r^2=2rsin(theta)+2rcos(theta) x^2+y^2=2y+2x (a little unsure what do next if this is

asked by Joshua on March 13, 2009
32. ## Math

Fin the value of Theta if sec theta=3 I inverted the value of sec theta to get cos theta=1/3 I then said Theta=cos-1 (1/3) Is thus correct? What is the answer rounded to the tenths place?

33. ## math

n angle theta satisfies the relation (CSC theta)(cos theta)=-1 Give an example of information needed to determine a unique value for theta If sec theta is known to be negative, what is the CSC theta value of theta?

asked by ibsa on March 28, 2019
34. ## Math

An angle theta satisfies the relation (csc theta)(cos theta)=-1 Give an example of information needed to determine a unique value for theta If sec theta is known to be negative, what is the csc theta value of theta?

asked by Saniya on February 23, 2017
35. ## Math

Which of the following functions have a vertical asymptote for values of theta such that cos theta = 1? Select two answers. y = sin theta y = cos theta y = tan theta y = sec theta y = csc theta y = cot theta I know what all these functions look like, but I

asked by Max on February 10, 2018
36. ## Precalculus

Solve for the equation in the given domain. (tan theta)(sec theta)=tan theta theta E{real numbers of degrees} BY THE WAY, REMIND ME IF THIS IS THE CORRECT WAY TO FIND THE ANGLE OF... sec theta=2 To find the angle do you set it up like this?? 1/(cos^-1)(2)

asked by Anonymous on November 17, 2013
37. ## Precalculus check answers help!

1.) Find an expression equivalent to sec theta sin theta cot theta csc theta. tan theta csc theta sec theta ~ sin theta 2.) Find an expression equivalent to cos theta/sin theta . tan theta cot theta ~ sec theta csc theta 3.) Simplify (tan^2 theta +

asked by Kelsey on May 28, 2012
38. ## Precalculus check answers help!

1.) Find an expression equivalent to sec theta sin theta cot theta csc theta. tan theta csc theta sec theta ~ sin theta 2.) Find an expression equivalent to cos theta/sin theta . tan theta cot theta ~ sec theta csc theta 3.) Simplify (tan^2 theta +

asked by Kelsey on May 30, 2012
39. ## pre-calc

prove the identity: (tan theta)/(csc theta) + 1/(sec theta)= sec theta

asked by leslie on December 7, 2008
40. ## Calculus

Below are the 5 problems which I had trouble in. I can't seem to get the answer in the back of the book. Thanks for the help! lim (theta-pi/2)sec(theta) theta->pi/2 Answer: -1 I am not sure what to do here. lim (tan(theta))^(theta) theta->0+ Answer:1

asked by Anonymous on February 17, 2008
41. ## I dont think drawing a picture will help me drwls

Which expression is equivalent to tan theta-sec theta/sin theta? A)-cot theta B)cot theta C)tan theta-cot theta D)tan theta-sec^2theta just tell me what I need to know to set it up

asked by Jon on February 14, 2008
42. ## Trigonometric Functions

Determine the Value of all six trigonometric functions of theta when given? I need help. This is for my midterm review, if anyone is willing to help, I'd appreciate it. a) sin theta= 3/5 and theta is in quadrant 1. b) tan theta= -2 and theta is in quadrant

asked by Mike on January 6, 2008
43. ## Pre-Calculus

1.) Which of the following polar equations is equivalent to the parametric equations below? x=t^2 y=2t A.) r=4cot(theta)csc(theta) B.) r=4tan(theta)sec(theta) C.) r=tan(theta)sec(theta)/4 D.) r=16cot(theta)csc(theta) 2.) Which polar equation is equivalent

asked by line on May 18, 2018
44. ## Calculus

1.) Find the derivative of tan (sec x). 2.) Find the derivative if 1/x in four ways, using the limit process, power rule, quotient rule and implicit differentiation. 3.) Show that the derivative of sec^-1 x is 1/(|x|*sqrt(x^2 -1)). 4. Find the derivative

asked by Anonymous on February 24, 2015
45. ## Algebra II

Multiple Choice Which expression is NOT equivalent to 1? (theta) means 0 with dash in it. A.)sin^2 (theta)+cot^2 (theta) sin^2 (theta) B.)(sin^(theta))/(1-cos(theta))-cos(theta) C,)sec^2 (theta)+ tan^2 (theta) D.)(cot^2(theta) sin^2 (theta))/(cos^2(theta))

asked by HotMath on June 9, 2011
46. ## Trigonometry

I don't understand how I'm supposed set the problem up or what theta is... Use the given function value(s), and trigonometric identities (including the cofunction identities), to find the indicated trigonometric functions. sec theta = 5, tan theta 2 *

asked by Chris on April 23, 2009
47. ## trig

Which expression is equivalent to tan theta - sec theta/sin theta? A)-cot theta B)cot theta C)tan theta-cot theta D)tan theta-sec^2theta

asked by Sha on November 15, 2008
48. ## trigonometry

I need help in understanding how to identify which identity to use. using this question as an example. Show that tan theta (sin theta+cot theta cos theata)all over cos theta = sec^2 theta. Please explain.

asked by lindsay on May 4, 2012
49. ## trig

in proving trigonometric identities if sec theta - tan theta sin theta is equal to cos theta. what is the correct answer?

asked by mien on February 1, 2012
50. ## Pre-Calc

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

asked by Purplechick4 on February 6, 2012

Calculate the exact values of the cot(theta) and sin(theta) for the acute angle theta if sec(theta)= the square root of 6. Thank you so much!

asked by Jill on December 9, 2011
52. ## Pre-Calc/Math

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

asked by Purplechick4 on February 7, 2012
53. ## trig

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)

asked by Laura on February 6, 2012
54. ## math

write each expression in terms of sine and cosine: csc^3 theta/cot theta * tan^2 theta/sec^2 theta

asked by anonymous on February 7, 2013
55. ## Trigonometry

Let (7,-3) be a point on the terminal side of theta. Find the exact values of cos of theta, sec of theta and cot of theta?

asked by Anna on March 20, 2014
56. ## Math Trig

Let theta be an angle in quad III such that sec theta = -13/5. Find the exact values of cot theta and sin theta? Thank you!!!

asked by Uzi on December 5, 2014
57. ## Maths - trigonometry

if sec theta*sin(36° + theta )=0 , find the value of theta so that theta and 36°+theta are acute angles

asked by Safi on April 16, 2017
58. ## math

Let theta be an angle in quadrant IV such that sin(theta)=-(2)/(5). Find the exact values of sec(theta) and tan(theta).

asked by Cody on August 3, 2018
59. ## Trig

Let (theta) be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).

asked by Johnny on May 11, 2011
60. ## Precalculus(NEED HELP ASAP PLEASE!!)

PLEASE HELP!! csc(theta)= -3/2 3pi/2 < theta < 2pi Find: sin(theta)= _____ ? cos(theta)= _____ ? tan(theta)= _____ ? cot(theta)= _____ ? sec(theta)= _____ ?

asked by jh on March 28, 2010
61. ## math

a sec theta + b tan theta =c and p sec theta + q sec theta = r then eliminate theta

asked by aryan on August 25, 2017
62. ## calculus

let theta be an angle of quadrant IV such that sin theta = -8/9 find the exact value of sec theta and cot theta?

asked by JOHNNY on January 14, 2020
63. ## trig

find an expression equivalent to sec theta sin theta cot theta csc theta

asked by Anonymous on December 8, 2011
64. ## precalc h

sin(theta)/1-cos(theta) + 1-cos(theta)/sin(theta) = 2csc(theta) That question makes absolutely no sense.. could someone help me? or lead me in the direction to figuring it out? and.. (Beside the trig functions is theta) 1+1/cos = tan^2/sec-1

asked by sam on December 9, 2012
65. ## trig

how do you find algebraically the measure of the obtuse angle, to the nearest degree, that satisfies the equation 3 sec theta = 5 is it sec theta = 5/3 and then cos -1 (5/8) = 0.4

asked by Anonymous on June 11, 2014
66. ## Calculus

Interval 4sec(theta)(sec(theta)+tan(theta))d(theta) can someone help me start his problem?

asked by Agnes on March 20, 2008
67. ## precal

Find the value of sec theta for angle theta in standard position if the point at (–2, –4) lies on its terminal side. If 0° lessthanorequalto x lessthanorequalto 360°, solve the equation sec x = –2. The terminal side of an angle theta in standard

asked by hannah on November 17, 2010
68. ## Calculus

sec theta 5 need to find cos theta cot theta cot (90-theta) sin theta not sure what to do completely confused on this stuff

asked by Cindy on February 18, 2013
69. ## math

How to solve for delta using trig functions? i.e. cosine sine tangent secant Thank you I'm not sure what delta you're referring to. Could you please elaborate some for us. What is it you're trying to do with the trig funtions? the problem is.. limit sec

asked by Kali on September 6, 2006
70. ## Math

1)Use the definitions sin0(theta) = y/r, cos0(theta) = x/r and/or tan0(theta) = y/x to prove that cot0(theta) = 1/tan0(theta) 2)For all 0(theta) prove: a)cos(t) = 1/sec0(theta) b. sec(t) = 1/cos0(theta)

asked by abeer on April 29, 2012
71. ## help help helpppp--math

1)Use the definitions sin0(theta) = y/r, cos0(theta) = x/r and/or tan0(theta) = y/x to prove that cot0(theta) = 1/tan0(theta) 2)For all 0(theta) prove: a)cos(t) = 1/sec0(theta) b. sec(t) = 1/cos0(theta)

asked by abeer on April 30, 2012
72. ## math

Hi ! Here is my question: The pythagorean theorem gives the relationships between the sides of a right triangle. The following identities show the relationships between the trigonometric functions of a particular angle. sin^2(theta) + cos^2(theta) = 1

asked by Andrew on March 31, 2013
73. ## Calculus 1A

I am trying to find: dy/dx for y = sec(tan x) I have the answer, but I have no idea how to get there. I know that the derivative of sec x = sec x tan x and that the derivative of tan x is sec^2 x. But sec doesn't have an x, so ...?

asked by Mary on March 26, 2013
74. ## Calculus

Which is the correct cofunction identity for (tan theta?) A csc(90degrees - theta) B sec (90degrees - theta) C sin (90degrees - theta) D cos (90degrees - theta) E cot (90degrees - theta)

asked by Philip on November 28, 2012
75. ## trig

(sec theta + cosec theta) (sin theta +cos theta) = 2 + sec theta cosec theta

asked by Jancy on August 20, 2011
76. ## trig

sin(theta)cos(theta)sec(theta)csc(theta) How do I simplify

asked by stacey graham on May 5, 2010
77. ## Trigonometry

Prove sin theta ( sec theta+ csc theta)= tan theta+1

asked by Mark on September 7, 2015
78. ## trig

Given Tangent theta = -5 on 4 and cos theta >0, find sine theta and sec theta

asked by Ruby on June 4, 2011
79. ## Pre calculaus

find sin theta and cos theta if cot theta = 3/7 and sec theta is < 0

asked by Shi on March 3, 2020
80. ## ,math

show that sec theta(cosec theta) - cot theta = tan theta

asked by tanya on May 3, 2013
81. ## Precalculus(NEED HELP ASAP PLEASE!!)

PLEASE HELP!! sin(theta)= 1/3 pi/2 < theta < pi Find: cos(theta)= ______ ? tan(theta)= ______ ? cot(theta)= ______ ? sec(theta)= ______ ? csc(theta)= ______ ?

asked by jh on March 28, 2010
82. ## Calculus (fixed the typo )

A line rotates in a horizontal plane according to the equation theta=2t^3 -6t,where theta is the angular position of the rotating line, in radians ,and t is the time,in seconds. Determine the angular acceleration when t=2sec. A.) 6 radians per sec^2 B.) 12

asked by anon on March 12, 2011
83. ## Physics

A bicycle starts at the origin of a circular track that has a circumference of 126 m and travels at a constant speed a distance s = 38.0 m in a time t = 12s. a)what is the angular displacement (in rad) of the bicycle from its starting position? r=20.1 so

asked by Anderson on April 16, 2007
84. ## Calculus

How do I find the critical values? y= 4/x + tan(πx/8) What I did is I simplified it to y= 4x^-1 + tan(πx/8) then I took the derivative y'= -4x^-2 + (π/8)(sec(πx/8))^2 Then I simplied it y'= -4/x^2 + (π/8)(sec(πx/8))^2 then I found a common denomiator

asked by John on September 24, 2013
85. ## calculus

A searchlight rotates at a rate of 4 revolutions per minute.? The beam hits a wall located 13 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

asked by saud on October 30, 2011
86. ## calculus

A searchlight rotates at a rate of 4 revolutions per minute.? The beam hits a wall located 13 miles away and produces a dot of light that moves horizontally along the wall. How fast (in miles per hour) is this dot moving when the angle between the beam and

asked by saud on October 30, 2011
87. ## Calculus

Differentiate to find critical numbers and leave function in fully factored form. g(x) = (x^2+1)^5(x^2+2)^6 g'(x) = (x^2+1)^5[6(x^2+2)^5(2x)] + (x^2+2)^6[5(x^2+1)^4(2x)] g'(x) = 2x(x^2+1)^4(x^2+2)^5[6(x^2+2)(2x) + 5(x^2+1)(2x)] g'(x) =

asked by Justin on October 14, 2015
88. ## math

if sec theta - tan theta ÷sec theta +tan theta = 1÷4 ,find sin theta

asked by aara on October 31, 2016
89. ## Algebra II

Verify that (sec theta/sin theta)(cot theta/csc theta) = csc theta is an identity. Thanks

asked by Lucy on April 19, 2008
90. ## Algebra II

Which of the following expressions are not equal to 1? A) sin^2 theta + cot^2 theta sin^2 theta B) (sin^2 theta/1-cos theta)-cos theta C) sec^2 theta + tan^2 theta D) cot^2 theta sin^2 theta/cos^2theta Answer: D

asked by Lucy on April 19, 2008
91. ## Precalculus

Which of the following are trigonometric identities? Select all that apply (there are 3 answers). A cos^2(theta)=sin^2(theta)-1 B sin(theta)=1/csc(theta) C sec(theta)=1/cot(theta) D cot(theta)=cos/sin(theta) E 1+cot^2(theta)=csc^2(theta)

asked by Statten on March 6, 2018
92. ## Trig.

I'm trouble solving for theta. Any help is appreciated. 0.73377324 = sin(theta)/cos(theta)

asked by James on October 9, 2012
93. ## Trig

suppose tan theta equal 4 and theta lies in the third quadrant. find the values of sec theta

asked by Broskie on September 13, 2013
94. ## trig

Let be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).

asked by Johnny on May 11, 2011
95. ## trig

what is the correct answer in proving trigonometric identities if tan theta / sin theta = sec theta

asked by mien on February 2, 2012
96. ## trig

what is the correct answer in proving trigonometric identities if tan theta/sin theta = sec theta

asked by mien on February 2, 2012
97. ## Trigonometry

Prove the following identities: 1. (tan theta - sin theta)^2 + (1-cos theta)^2 = (1-sec theta) ^2 2. (1-2cos^2 theta) / sin theta cos theta = tan theta - cot theta 3. (sin theta + cos theta ) ^2 + (sin theta - cos theta ) ^2 = 2 Thank you so much! :)

asked by Fern Angel on April 22, 2016
98. ## Trigonometry

Prove the following identities: 1. (tan theta - sin theta)^2 + (1-cos theta)^2 = (1-sec theta) ^2 2. (1-2cos^2 theta) / sin theta cos theta = tan theta - cot theta 3. (sin theta + cos theta ) ^2 + (sin theta - cos theta ) ^2 = 2 Thank you so much! :)

asked by Fern Angel on April 21, 2016
99. ## trig 26

simplify to a constant or trig func. 1. sec ²u-tan ²u/cos ²v+sin ²v change expression to only sines and cosines. then to a basic trig function. 2. sin(theta) - tan(theta)*cos(theta)+ cos(pi/2 - theta) 3. (sec y - tan y)(sec y + tan y)/ sec y combine

asked by hilde on March 14, 2010
100. ## Trig

How do I solve the following? sec 3 theta/2 = 2 on the interval 0

asked by Katie on March 14, 2010