# alg/trig

4,424 results, page 16
1. ## trig plz help

Solve, finding all solutions in the interval [0, 2π). tan(3x) = -1
2. ## TRIG

find: sin 23pi/12 i got totally the wrong answer how do i approach this?
3. ## CALCULUS HELP!!!

integrate 1/(x^2sqrt(1+x^2)) i know you have to use trig sub but iono how to cancel out some terms...much help is appreciated
4. ## trig

Write the measure in radians. Express the answer in terms of ð -260°
5. ## trig

find exact value using sum or differnce equations. tan(19pi/12)
6. ## trig

how come you get different answers if you take different paths in trigonometry? (when you choose to use sin, cos or tan)
7. ## trig

How do you find all the solutions of the equation in the interval [0,2π)? 3tan^3x=tanx
8. ## trig

determine an exact expression for the trigonometric function sin(13pi/12).
9. ## Pre-calc/Trig

For each parabola, tell in which direction the graph opens. x= 1/2y^2 y= -1/24x^2
10. ## Trig help

Which of these is equivalent to 3π/5 rad ? A) 108° B) 150° C) 216° D) 300° I'm thinking A
11. ## math, trig

What is the exact value of the cos of 23pi/12? (Twenty-three pi over 12, which is = to 345 degrees.) Thank you
12. ## Pre-calc, Algebra, Trig

(2x squared-3x +1)(4)(3x+2)cubed (3)+(3x +2)raised to the 4 (4x-3) Simplify
13. ## trig

Use half-angle formulas to find the exact value for the following cot 75 degrees

If cos A-1=0, where 0<or= A< 2pi, then A=? The answer I got was pi/3,5pi/3. I don't know where I went wrong can you please help. thanks
15. ## trig

In triangle ABC, find <A to the nearest tength of a degree is m<B=95 degrees , b=15.4, a=8.0
16. ## Trig

Find the area of the triangle. b=125 c=162 <B=40 (b and c are the sides) (<B is the angle)
17. ## Trig Math

Solve the equation algebraically for x wohere 0 </ x< 2 pi. sin2 x = cos x
18. ## Calculus

1. integral (x^3 * sqrt(x^2-4)) dx I'm confused on how to start this problem, if I am doing trig substitution.
19. ## Trig

Find the distance from pi. 7 pi/6. I subtracted 2 pi from this and got -5pi/6. But the correct answer is pi/6. Whwere did this come from?
20. ## trig

what is the angle of elevation of a 15 foot ladder leaning 12 feet up a building?

22. ## TRIG,

Can you solve and show me the work in these two equations? cos(3x)=-1 tan (theta)=-1
23. ## trig

If cos A= -6/7, in quadrant 2, determine the exact value of tan 2A I don't understand how to do this?
24. ## Trig.

Please solve this equation. As you write down the steps, please give me a description on what you did. y^3 - 16y^3/2 + 64 = 0
25. ## trig

how to do the calculation while taking 'A' as 15 in the half angle formula used for calculating the value of sin 7.5 ?
26. ## trig

hoW to evaluate these if cos=-12/13, A in Q II and cot B =5/12, B in Q III A) Sin^2 A (the sign ^ is power of)

28. ## trig

triangle has sides 200,172 and155 find area
29. ## math

what is 7-2i in trig form? and if u=3j and v=7i+j what is the dot product of u times v don't get this one because there are no i terms for u thanks
30. ## trig

solve each equation if 0 < x < 2pi. answer must be in radians 1. 4 cos x - 2 = 0 2. 3 sec^2 - 4 = 0
31. ## Trig.

Why is the arctan of (- square root of 3) 5 pi/6. How come it isn't broken down to 5 pi/3 since I got 10 pi/6 and that reduces to 5pi/3
32. ## trig

find all sets of three consecutive odd integers whose sum is greater than 54 and less than 63
33. ## Pre-Calculus/Trig...

Help Please For the function defined by: f(x)= (x^2,x≤1) (2x+1,x>1) Define f(0). and also how would i graph f(x)?
34. ## trig

Use the double angle formula to verify the identity cotxsin2x=1+cos2x
35. ## Trig

Use the half angle formula to find the exact value of tan 7 pie/8
36. ## trig

transform the expression on left to one on right csc x-sin x to cot x cos x
37. ## trig

how do you use doubel-angle formulas to find sin, cos, and tan
38. ## Trig

f(x) = -cos(3x + pi). Find the amplitude, period, and phase shift of the function.
39. ## Trig

Hi. Can somebody help me solve this equaton with EXACT answers? ----- sin3x = 0 ----- Thankyou! All help is appreciated.
40. ## Pre-Calc/Trig

Help me please. List all possible rational zeros for the polynomial function. p(x)=3x^3-2x^2-5x-2
41. ## Trig

How do you find an equation of a line perpendicular to y=x at the point (5,5) in standard form?
42. ## Pre-Calc/Trig

y=-x^2+5x+36 converting into intercept form is this the correct answer? y=(x+9)(x-4)
43. ## trig

write down the value (corect to three decimal places of:- a) sin64= b) tan21= c) cos67.4=
44. ## Trig

Determine the quadrant in which each lies: sec0<0,cot0<0 sin0<0,tan0>0
45. ## trig

Rewrite 3pi/25 in degree measure. Round to three decimal places.
46. ## trig

solve the equation 2 sec x- tan x = cot x for the interval 0 to 360
47. ## trig

find the exact value by using the appropriate half-angle identity: sin(5pi/12)
48. ## trig

Find the focus, directrix and axis of the parabola with equation x= 2y^2+3? Thank you for helping me!
49. ## trig

find the exact value of each expression. do not use a calculator. Sec 3.14/4 + 2 csc 3.14/3 4 + tan 2*3.14/3
50. ## trig

Express each value as a trigonomic function of an angle in quadrant I: Cot(-660)
51. ## Pre-Calc/Trig

I have looked this up, but still cant figure out what it is.. What is the projectile motion function?
52. ## trig

Determine a pair of coterminal angles in radian measure to the angle pi over 2
53. ## trig

Find all solutions of the equation 2sin^2x-cosx=1 in the interval [0,2pi) x1= ? x2=? x3=?
54. ## trig

Verify the identity: sin(x+y)/cos(x-y)=cotx+coty/1+cotxcoty
55. ## trig

Prove the identity. (must work with left side) (1-2sin(x)^2)=(cos(x)^2)
56. ## Calculus (trig stuff)

given a angle how do I find it's point P on the unit circle?
57. ## trig

How do you find the exact value of an inverse function geometrically. ie, tan(cos-1(4/5))
58. ## Pre-Calc/Trig...

Which of the following could be an example of a function with a domain (-oo,oo) and a range (-oo,2)? Check all that apply. A. y= -(3)^x+2 B. y= -(3)^x-2 C. y= -(0.25)^x+2 D/ y= -(0.25)^x-2
59. ## trig

if p and q satisfy the equation atanx+bsecx=c then prove tan(p+q)=2ac/a2-c2
60. ## trig

if x is a positive acute angle, then express tan(180+x) as a function of x
61. ## math Trig

find each ratio to 3 decimal places cot245degrees sec74degrees how do i do this?
62. ## trig

evaluate the trigonometry function using its period as an aid cos(-7pi/3)
63. ## Pre-Calc/Trig...

Help me please. Solve the equation: (x-3)(x+2)=0 Enter the solution with the lowest value.
64. ## Quick Math trig question

Would sin^2x / cos^2x equal tan^2x?
65. ## trig

Write an expression that gives all solutions to the equation sin x + cos x = - radical 2
66. ## Pre-Calc/Trig...

Write the equation y = log x in exponential form.
67. ## Pre-Calc/Trig...

am i correct? What is the axis of symmetry for the graph of y=2x^2-4x+2? x=? the line goes through 1? x=1
68. ## Alg 1

You have 60 megabytes of space left on your portaable media player. You can choose to download song files that use 3.5 megabytes or video files that use 8 megabytes. You want to download at least 12 files. What is a graph showing the numbers of songs and
69. ## Precalculus/Trig

I can't seem to prove these trig identities and would really appreciate help: 1. cosx + 1/sin^3x = cscx/1 - cosx I changed the 1: cosx/sin^3x + sin^3x/sin^3x = cscx/1-cosx Simplified: cosx + sin^3x/sin^3x = cscx/1-cosx I don't know where to go from there.
70. ## Pre-Calc

Consider a triangle ABC. C is a right angle, and side a is opposite angle A, side b is opposite angle B, and side c is the hypotenuse. The measure of side a= 2, side b= 7, and side c= 7.3 How do you find the angle measure of A and B based on the lengths of
71. ## alg

a garden has width ã13 and length 7ã13. whats the perimeter of the garden in the simplest radical form a) 14ã13 units b) 16ã13 units c) 91 units d) 8ã13 units
72. ## Alg II

I'm working with finding roots of polynomial equations with degrees of 3 or higher. I have the equation r(x)=x^4-6x^3+12x^2=6x-13 I used a graphing calculator to find the real roots of 1,-1 Then I did synthetic using -1, and I ended up with the equation
73. ## Alg II

I'm working with finding roots of polynomial equations with degrees of 3 or higher. I have the equation r(x)=x^4-6x^3+12x^2=6x-13 I used a graphing calculator to find the real roots of 1,-1 Then I did synthetic using -1, and I ended up with the equation
74. ## alg

solve equation g+4/g-2=g-5/g-8 another qustion an elliptical track has a major axis that is 80 yrds long and minor axis 72 yards long find an equation for the track if its center (0,0) and the major axis is the x axis
75. ## ALG 2!!!

6. What is the slope of the line represented by the equation x = -9? 7. Write an equation of a line with a slope of 0 and passing through the point (5,4). Hint: To answer this question, consider the type of line that has a slope of 0. Then write an
76. ## elem alg

On a certain test, the student gets 3 points for each correct answer and loses 2 points for each incorrect answer. The test has 37 questions total. (no question can be lfet blank.) If x is the number of answers a students gets correct, write and express

use an inverse trig function to write theta as a function of x (There is a right triangle drawn. The hypotenuse is 2. Theta is the angle between the base and the hypotenuse. The base/adjacent side of theta is labeled(x + 1) The side opposite theta does not
78. ## Alg. 2

if you invest a total of 1000 dollars, part at 6% and part at 8%, if you invest x dollars at 6%, then how much do you invest at 8%?
79. ## trig

Find all values of ¸ in [0°, 360°) that satisfy the equation. 2 sin 2θ - √(3) = 0
80. ## trig

Find all real numbers in [0, 2π) that satisfy the equation. cos 2x = √(2)/2
81. ## Trig

Which trigonometric function can equal or be greater than 1.000? A Sine B Cosine C Tangent D none of the above
82. ## trig

3tan(3x) = sqrt(3) Solve the equation for exact solutions of the interval [0,2pi).
83. ## Trig

Find the general solution for the equation 4tanx+cotx=5?????? and the steps please? THANYOO!
84. ## trig

how can you confirm the identity cos^4x = (1/8)(3+ 4cos2x+ cos4x) and sin4x = (4sinxcosx)(2cos^2x-1)
85. ## Pre-Calc/Trig...

I have one way, but cant think of another? Show two ways of finding y if y = log4 64. Explain your thinking. 4^x=64 x=3
86. ## trig

ABC is an isoscele triangle in which [AB]=[AC]=5cm and [BC]=6cm. Calculate [AM], where M is the mid-point of BC.
87. ## Pre Calc Trig

Verify the following: tan( a + p/2) = -cot a a= alpha and p= pie since I do not have that button.
88. ## Trig

Find the exact value of each of the following using reference angles. a)sin 225degrees b) cot 120degrees
89. ## Trig

find the equation for the cosine function that has an amplitude of 3/5, a period of 3pi/2 and a y-intercept of 5.
90. ## trig

If \$5000 is invested at a rate of 3% interest compounded quarterly, what is the value of the investment in 5 years?
91. ## Precalc/Trig 1

What equation would you use to show that the point ((square root of 11)/(6), (5/6))is on the unit circle?
92. ## Trig 4

Can someone break down the meaning of sin, tan, and cos into simpler more understandable terms?
93. ## trig

evaluate the expression: cot 270 + 8 cos 180 + 5 sec2-360
94. ## Trig....

use specific triangles and the unit circle to geth the values. tan(5pi/6?)
95. ## trig

In Rights Triangle ABC with C=90 degrees if a=4 and c=2square roots of 7, find SinA
96. ## trig

find the 5 other thrig functions if cos(theta) = square root of 2/2 and cotangent is less than 0
97. ## trig

Find cosq and sinq if the terminal side of q lies along the line y = - 2 x in quadrant IV.
98. ## Trig

Find the 6th term of the arithmetic sequence with a9=120 and a14=195
99. ## trig

tan=.6524 use a calculator to approximate two value of an angle (0<0<360) that satisfy the equation.
100. ## functions and trig

write the transformation of X cubed if it is shifted right four units and then reflected over the X axis