# alg/trig

4,424 results, page 21
1. ## trig

If it is given that tan(A-B)=tanA-tanB/1+tanAtanB and tanP-1/1+tanP=tan195 find p
2. ## Trig

2 vectors at a Right angle to each other are pulling on a bolt. vector 1 = 650; vector 2 = 300 then R = ?
3. ## trig

Can you please help me w/ this?? The range of the function y=tan pi x is abs(y) > (greater than or equal to) A The value of A is (a) 0 (b)2 (c)- infinity (d)+ infinity (e) none of these
4. ## Math

Find the exact value of the trig expression given that sin u = -5/13 and cos v = -4/5. u and v are in the second quadrant. cos(v - u)
5. ## trig

Name three values of theta that would result in y equal to cot times theta being undefined.
6. ## Pre-Calc/Trig...

Help me do this please. Simplify the expressions using imaginary numbers. 1. √-16 2. √-49
7. ## trig

Given that sin theta= 3/5 and the terminal side is in quadrant II, find tan (pi/2 - theta)
8. ## Math/Trig

Solve: sin2 x = cos2 x for 0 degrees is less than or equal to x is less than 360 degrees.
9. ## trig

convert 80 degrees into radians 80 deg *2PI rad/360 deg = ?
10. ## Trigonometry

Can you please help me solve this trig equation for 0 ≤ x ≤ 2π? 9sin^2(x)-6cos(x)-10=0 Thank you!
11. ## trig identities

Find the exact value of cos (2theta) given csc theta = 8/3 and 0 < theta < pi/2
12. ## Trig

Rules of Logarithms: Can someone explain how to do: 1) e^(2(ln)(x)) 2) e^(-lnx) I know the rules I just don't understand how they apply.. thanks!
13. ## math trig

a triangle abc has a mearsure of an adjacent 15 and 25 degree solve for the triangle
14. ## Trig

Find the algebraic expression that is equal to sec theta - cos (-theta)
15. ## Pre-Calc/Trig...

Which of the following is the equation of a line parallel to the line y = 3x + 2, passing through the point (10,1)? 3x + y = 29 3x - y = 29 -3x - y = 29 3x + y = 29
16. ## trig

what is the exact value of cos(x+y) if tan=x sqare root 3 over 3 and sin y=square root 2 over 2?
17. ## Trig

does sin and tan repeat 2Pi as well? and what do csc sec an cot do? -2PI?
18. ## trig

how can i find all the exact solutions to the equation : 2cos^2x + 3sinx = 3 the solutions have to be between [0,2pi)
19. ## Trig

3. In the figure below, the perimeter of the parallelogram ABCD is (6a + 8b + 29) and the perimeter of the triangle ACD is (3a + 4b + 32). What is the length of AC
20. ## Trig

Find sin(x+y), cos(x-y), tan(x+y), and the quadrant of (x+y) if sinx= -1/4, cosy= -4/5, with x and y in quadrant 3.
21. ## Trig

Given Tan(A) = 5 in Quadrant III and Sin(B) = ⅔ in Quadrant II, find Cos(A-B).
22. ## algebra-trig

Can someone please explain to me how to graph sine and cosine step by step because I am so confused and I really really need help.
23. ## trig

solve each equation for 0 less than or equal to x greater than 2ð. cot²x-cscx=1 thanks:) step by step please :)
24. ## trig

if sina,cosa,tana are in geometric progression then prove that cot^6a-cot^2a=1
25. ## algebra-trig

Can someone please explain to me how to graph sine and cosine step by step because I am so confused and I really really need help.
26. ## trig

solve the equation of the domain 0¡Ü¦È¡Ü2¦Ð 3cos^2theta - 5costheta -1 = 3sin^2theta
27. ## trig

How do I solve.... Tan 2(theta) - Cos 4(theta) = 0 Domain: (0-360 degrees) Thank you.
28. ## trig

If sinx = -3/5, tan x > 0, sec y = -13/5 and cot y < 0, find the following: a. csc(x + y) b. sec (x - y) How do I get the answers of a. -65/33 b. -65/16 Thank you
29. ## trig

Verify the Identity: sec(x/2)=the square root of (2 tanx/(tanx sinx))
30. ## trig

How do I prove : 4sinAcosAcos2Asin15 all over. :sin2A(tan225-2sinsquared A)is equal to. :root 6 - root 2 over 2
31. ## Trig

What is the period of f(x)=sin4x. I got pi/2 but on my answer list, it is not on there. a.4pi b.2pi c.pi d.1/2pi Which one would i choose?
32. ## trig

Verify the equation is an identitiy: cot(x)tan(x+pi) - sin(pi-x)cos((pi/2)-x) = cos^2x Thanks
33. ## trig

A road has a 10% grade (slope). To the nearest degree what is the angle of elevation of the road?
34. ## trig

secx=5 use a graph to solve the following equation in the interval x is greater than -pie but less than pie
35. ## Trig

Could someone please show me how 1 / ( 4 tan (x/2) + 2 ) is converted to: (- sin (x/2) /( 2 sin (x/2) + cos (x/2)) TIA Carol
36. ## trig

Use trigonometric identities to find sec theta, given that tan theta = Radical 5/ 3.
37. ## Trig

If the terminal side of an angle theta contains the point (-1,3), find secant theta.
38. ## Lost in the pits of ALG

I have 5 problems I seem to not be able to comprehend out of 150 that are due Tuesday. I have tried every which way to solve them on my own..please help. Find the variation constant in which y varies inversely as x, and the following condition exists. Y=30
39. ## precal

when i do the quadratic equation i get -17 plus or minus the square root of 193 all over 2. where do i get the two "cos 3x" roots?? solve the equation to the nearest tenth, where 0 degrees < or equal to x which is < 360 degrees. 8cos^2 3x-17cos3x+3=0
40. ## math--pre alg

not sure i did right 3(f+2)+9=13+5f 3f+6+9 = 13+5f +9 3F+15 = 12+5F GOT MIXED UP SOMWERE HELP 3f +6 +9 = 13 + 5f 3f + 15 = 13 + 5f 2f = 2 f = 1 drwls is correct You are doing OK up to this point: 3f + 6 + 9 = 13 + 5f Now combine any like terms. (We can
41. ## Math (Trig) lowering powers

If cos^4(3x)-sin^4(3x)=cos(g(x)) then g(x)=? Use a^4-b^4=(a^2-b^2)(a^2+b^2)! thanks in advance for any help!
42. ## trig

a right triangle contains a 25 angle. if me leg is of length 5 inches what is the length of the hypotenuse
43. ## trig

In a certain right triangle, the two sides that are perpendicular to each other have lengths h = 4.40 m and b = 8.70 m. What is the length of the third side of the triangle?
44. ## math/cal/trig solve for t

solve for t: 0=4sin(2t)cos(2t)-sin(2t)
45. ## Trig Help

Given that cos2x=7/12 and "270 equal or < 2x equal or < 360", find sinx. Please help and Thank you
46. ## trig

Suggest a cosine function that will "imitate" the sine function by manipulating ONE of a,b,c or d. Thank you
47. ## trig

Prove that the statement is an identity: (tanx/cscx)=(1/cosx)-cosx
48. ## Trig

can you please simplify these in faction form? (pi/3) +1=? (2pi/3) +1=? (3pi/4) +1=? (5pi/4) +1=? (5pi/3) +1=? thank you so much!
49. ## trig

Suggest a sine function that will "imitate" the cosine function by manipulating ONE of a,b,c or d. Thank you
50. ## Trig

Verify that each trigometric equation is an identity. 1/1-sinx + 1/1+sinx = 2 sec^2x
51. ## trig

if sec theta =sqrt -20/3 state the exact value of tan theta
52. ## trig

given cot-A square root of 5, find cot-B at the 4th quadrant.
53. ## Trig

The point P(3, 4) is on the terminal side of θ. Evaluate tan θ. 3/4 3/5 4/3 4/5
54. ## Trig

Solve equation for 0 less than or equal to theta less than 360. 3-1/5*tan(theta)=16/5
55. ## Maths-Trig

How does sin(c+h)=sin(c)xcos(h)+cos(c)xsin(h) please explain
56. ## trig

Given that sin(5x-28)degree=cos(3x-5),0 lessthan x lessthan 90degree,find the value of x.
57. ## trig

converting degrees to radians. a) 95 degrees i did 95/180=19/36 then i did 19 pie/36. and i got 1.7. is that right if not can someone please explain! thanks so much
58. ## trig

Find the exact value of cot 45°, if the expression is undefined write undefined.
59. ## trig

Find y if the point (7, y) is on the terminal side of θ and cos(θ) = 7/25
60. ## trig

how do i get the degree for (tan+1)(tanx-2)=0 in the interval of 0 is less that or equal to x and x is less then or equal to 360
61. ## trig

determine the phase shift of y = sin(3x - 2pi). indicate whether the shift is to the right or left.
62. ## trig

find the single term of cos^2 4theta - sin^2 4theta
63. ## trig

5. If the angles X and Y each measure between 0° and 90°, and if sinX = cosY, what is the sum of the measures of the angles X and Y?
64. ## trig

I need to prove parallelogram law using the law of cosines. 2AB^2 + 2BC^2 = AC^2 + BD^2 Please, help me to do this.
65. ## trig

1.Ifg(x)=cos4x,find g'(pie/24). 2.Differentiate y=csc^2 pie*x
66. ## 12th grade Trig

sec theta = 2, sin theta is less than 0. I'm not sure what to do? Please explain. Thank you.
67. ## trig

If csc theta = 2, then what is theta approximated to 4 decimal points? RADIANS
68. ## 11th grade Algebra 2/ Trig

The expression log 10^(x+2)- log 10^x is equivalent to???
69. ## math

Trig Identities prove sinx+1 \ 1-sinx = (tanx+secx)^2
70. ## trig

solve triangle ABC which have angleA=25.25,angleB=60.51 and a=3.82..find c...,find b
71. ## trig

unsure how to find phase shift,vertical shift of y=-2cos(x+3.14/4)+5
72. ## Math (Trig)

Solve the equation for exact values of x. sin(x) = 1-2(sin(x))^2
73. ## Trig

Solve for t algebraically: inverse cos(t) = inverse sin(t). Where do I start?
74. ## trig

if cos(pi/4) is sqrt2/2 i thought sec(pi/4) is 2/sqrt 2,but its just sqrt 2 . can some one please explain.
75. ## Precalculus with Trig

Rewrite the following expression as an algebraic expression in x: cos(arcsin(x))
76. ## trig

an angle 30 with the distace of 24km and an angle of elevation of 45 with the distance of 15km.
77. ## Trig

Given ∆ABC. If side a is twice as long as side b, is <A necessarily twice as large as <B? Why?
78. ## trig

how do you solve 2nd cos 6/11 (my calculator doesn't have 2nd function0
79. ## math trig

a triangle has a measured of hypoteneuos 15 and an adjacent of 10 solve for the triangle.
80. ## trig

PROVE: Cos 2theta = .5 (cot theta - tan theta) Please help me
81. ## trig

Find sin(2theta) if tan of theta = 7/24, pi < theta < 3pi/2 ?
82. ## trig

explain the methid used to get the answers 45m*cos33=37.7m and 45m*sin33=24.5
83. ## Trig

Tan theta 12/5 ,pi <theta<3pi/2 Find sin 2theta
84. ## trig

convert the point with polar coordinates (2,7pi/6) into rectangular coordinates.
85. ## trig

angle x lies in quadrant 3 and cos(x)=-.6. Find cos(3pi/2-x)
86. ## Pre- cal Trig

2cos^2x=cosx. Can you subtract the cos from cos^2? Or what would i have to do?
87. ## Precalc with Trig

What value(s) of x from 0 to 2pi solve the following equation: cos squared x - cos x - 6 = 0
88. ## Trig

How do you convert rectangular equations into polar equations? If x4−y4=xy , then r2=atan(b); What is a? What is b?
89. ## trig

let sin theta = -7/25 with theta in QIV find sec (2theta)
90. ## trig

How do you convert polar coordinates to Cartesian coordinates? And vise versa.
91. ## trig

Suppose that sin x = 1/5 and cos y = 2/3, and x and y are each angles in Quadrant 1. Determine sin(x+y).
92. ## trig

Derive the identity 1 + cot ^2 theta = csc^2 theta by dividing x^2 + y^2 = r^2 by y^2
93. ## trig

tan(theta)=(7/24), sin(theta)<0 find cos(2theta)
94. ## trig

DISCUSS THE POSSIBLE VALUES OF THETA IF THE RATIO IS COS THETA IS EQUAL TO 0
95. ## Trig

Given that tan(pi/2) = a. Express tan(x) and sin(x) in terms of a. Hint: Use the fact that x = 2.(pi/2)
96. ## trig

given that tan(x/2)=a. Express tan(x) and sin(x) in terms of a. Hint: use that fact that x= 2*(x/2)
97. ## TRIG

Use the cofunction of a complementary angle. PLEASE HELP ME! tan θ = cot (30° + 5θ)
98. ## Pre-Calc/Trig...

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=(x+5)^2
99. ## Advanced Functions/Trig

Prove the identity: cos^4 x + sin^4 x = 1 - (1/2)sin^2 (2x)
100. ## trig

Verify that each trigonometric equation is an identity tan^2+1/sec Î± =sec Î±