# alg/trig

4,413 results, page 10

1. ### trig

cos 8 degrees fo feet 25 inches??
2. ### trig

Solve system of inequalities by graphing Y<2-x Y>x+4
3. ### trig derivatives

How do I find the derivative of 6 + 8cosx?
4. ### trig

What is inverse cot of negative radical 3/3
5. ### trig

What is the exact value of 19 pie divided by 12.
6. ### Trig

Triangle ABC has B= 137degrees, A=31.6 in., and C=42.8 in. Find B.
7. ### trig

Cos 3 alpha = - 0.1 solutions in degree
8. ### trig

differenthate sin8x from first principle?
9. ### Trig

Prove that 1 + tanAtanA/2 = tanAcotA/2 -1 = secA
10. ### trig

What is the fundamental period of the function f(x)=4/9sinx
11. ### trig

how can we find the value of sin -720
12. ### trig

4 costheta +3sintheta=5,4sintheta-3costheta=WHAT
13. ### Trig

if tan(x)=9/4, find cos(x) if pi<x<3pi/2
14. ### trig

if sin 7x = cos x+10 find the value of x
15. ### trig

Simplify the expression cos^2 x (sec^2 x-1)
16. ### trig

2cos^2 22.5-1 (find exact value)
17. ### trig

cos(sin^-1 x)=sq rt(1-x^2) prove the identity
18. ### trig

if sin2x=3sin2y, find 2tan(x-y)
19. ### Trig

Find the co terminal angle for 15pi/4
20. ### Trig.

Subtract. Simplify is possible. (x^2-3x-28)/(x^2-x-42) -(x^2+10x+24)/(x^2+x-12)
21. ### trig

Find the dot product of u and v u= 3i+7j v= 11i-5j
22. ### trig

two dice are rolled, find p(2,then 3)
23. ### trig

find the exact radian of 84 degrees
24. ### trig

find the angle between vectors U= <2,3> and V= <1, -5>
25. ### trig

what is the exact value of sin[tan^-1(2/3)]
26. ### trig

sec8A-1/sec4A-1=tan8A/tan2A
27. ### Trig!

Find the following values for each function. A. f(0) B. f(-1) C. f(-x) D. f(x+1) f(x)=2x^2+3x-4 and f(x)=x^2/x+1
28. ### trig

Find the domain of each function. f(x)=Sqareroot of 5-x f(x)=x^3/x^2-16
29. ### trig

2 cos(theta-13)= square root of 3
30. ### trig

(1 + sinx)(secx - tanx) = cos x
31. ### TRIG

(cotx + cscx(1-cosx)= SIN x
32. ### Trig

cos x cot = csc - sin
33. ### Trig

What re the roots of the following polynomial equation (x+5)(x+2)(x-5)=0
34. ### trig

How do I find the exact value of sin (pi/24)?
35. ### trig

if sin 41'=m. write m in terms of cos 41'
36. ### trig

What happens when you try to elevate sin-1(3/2)?
37. ### Trig

Rewrite 6x^2 - sqrt(3)xy + 5y^2 - 9 = 0 with the xy term eliminated.
38. ### Trig

Convert 2xy = 1 to polar form.
39. ### math

simplify sin(540-2x) this is to do with trig
40. ### TRIG

What is the 6th term of the geometric series with a1= -5 and r=2.5
41. ### trig

If (m+2)sin ø + (2m-1)cos ø = 2m+1 then tan ø is equal to
42. ### trig

determine the period of the function. y = cot 4t
43. ### trig

Multiply and simplify. (cos x - sin x)^2
44. ### Trig

Multiply and Simplify. ( 1 + cot θ )^2
45. ### trig

simplify the expression. -sin^2x-cos^2x
46. ### trig

simplify the expression. cot^2(x)-csc^2(-x)
47. ### trig

Which expression is equivalent to csc x - sin x?
48. ### trig

Evaluate and simplify tan 5π/12.
49. ### trig

tan^2(5x)cos^4(tx = 1/8 - 1/8cos(20x)
50. ### trig

tan^2(5x)cos^4(5x) = 1/8 - 1/8cos(20x)
51. ### Inverse Trig

What is the general solution to y = arcsin 1?
52. ### Inverse Trig

What is the general solution to y = arcsin 0?
53. ### Trig

What is the sum of the arithmetic series where n=50 , t1=9 and t2=331
54. ### Precal/trig

sina=3/5, pi/2<a<pi evaluate cos2a
55. ### Pre-Calc/Trig...

Assume f(x) = -2x + 8 and g(x) = 3x. What is the value of (f + g)(-1)?
56. ### Pre-Calc/Trig...

vertex form:y-4=-(x-4)^2
57. ### trig

Solve R=3(1-sin theta) and graph
58. ### trig

what is the reference angle for 11π/6? how would i do this?
59. ### Trig

How do you derive this identity? Cos(t)=1-sin^2(t/2)
60. ### Trig/ algebra 2

if f(x) = sin4x-cos2x, find f(pi/8)
61. ### Maths trig

Sketch the graphs of f(x)=3overx+1 and g(x)=-2x-4
62. ### Trig

(Tan/cot)- (sec/cos)
63. ### Trig

Help me find out how to do csc5pi over6
64. ### Trig

Solve for [0,2pi) 2cos4x + sqrt3 = 0
65. ### trig

sec = 7/2 and is in Q1, then what is double angle of tan?
66. ### MATH

Integrate 1/(x(x^2+1)) dx using trig substitution
67. ### Trig

if sin(x)=-0.5 and x is in the third quadrant, find x
68. ### Trig

4x+y=​0, x≥0 help finding Sin, Cos, Tan for this

70. ### Math (Algebra 2 / Trig)

y=x^2+bx+7 has a vertex at (-4,-9). What is the value of b?
71. ### ALG WORD PROBLEM

The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 9 amperes when the resistance is 940 ohms. What is the current when the resistance is 580 ohms? Thank you yet again. Almost through with this part of the class thank ...
72. ### college alg.

An event in the Summer Olympics is 10-meter springboard diving. In this event, the height s, in meters, of a diver above the water t seconds after jumping is given by s(t) = –4.9t2 + 7.1t + 10. What is the maximum height that the diver will be above the water? Round to the ...
73. ### Alg. 2

I know how to graph polynomial functions, but i'm having a hard time getting the second point on this one. f(x)=x(x-1)(x+2)(x+2). I graphed my zeros and made the right arrow go up and the left arrow go down. I plotted my first point by pluggin in -1. My first point is (-1,2). ...
74. ### 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. 2. (sinx + cosx)(tanx...
75. ### Alg 2

Today we learned how to solve systems of equations with 3 variables, however my teacher didn't go over how to do a problem where not every single equation in the system has the 3 variables. Can someone point me to a place that explains this? the kind of problem im talking ...
76. ### alg.

Find the coordinates of the vertex and the equation of the axis of symmetry of the parabola with the given equation. y = 8x2 + 48x − 3 vertex (x, y) = _____________ axis of symmetry _____________
77. ### trig

For each expression in column I, choose the expression from column II to complete an identity: Column I Column II 1. -tanxcosx A. sin^2x/cos^2x 2. sec^2x-1 B. 1/sec^2x 3. sec x/cscx C. sin(-x) 4. 1+sin^2x D.csc^2x-cot^2x+sin^2x 5. cos^2 x E. tanx I figured #1 is C, #2 is A, ...
78. ### alg application

two cars leave the station at 9:00 am. the first car head due south at an avg speed of 54mph. the second car heads due west at an avg speed of 72mph. how far apart will the cars be at 1:00pm? my solution: 360mi is this correct
79. ### alg

A clothing company uses the expressions that follow to estimate revenue and expenses based on the production of x lots of clothes: Revenue: Expenses: The ratio of revenue to expenses is represented by the rational expression that follows: A. Factor the numerator and ...
80. ### 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%?
81. ### trig

if sin2x=3sin2y, prove that: 2tan(x-y)=tan(x+y)
82. ### trig

Graph the followiing function from x + 0 to x = 4 pi y = 3 cos squared x/2
83. ### Trig

Find the exact value of: tan(-3pi).
84. ### trig

eliminate the parameter t from the following x = 9sin t y = 9cos t
85. ### trig

If a = 5 cm and b = 3cm, use the Pythagorean Theorem to find c
86. ### trig

If an angle is 1 radian, what is the arc length in radians?
87. ### Trig

What is sin^2 - cos^2 x/ 1-2cos^2 x, using the identities.
88. ### trig

solve 2sin^2x+sinx-1=0 in the interval [0, 2pi0
89. ### algebra with trig

how do you solve an inequality and graph it's solution?
90. ### trig

for a tangent graph is one of the asymptotes AWLAYS at - pi/2 ?
91. ### trig

simplify cosecant (2(square root of 3) divided by 3
92. ### Trig

given sin(4x)=5/13 in Q II find Tan(2x) and cos(2x)
93. ### trig

how do i solve tan(165) and sin(285)
94. ### trig

unscramble these letters into 3 words: rceureigthorty
95. ### trig

2cosx+sinx+1=0 how do I get everything in one function?
96. ### trig

Solve for X. Leave answers in logarithmic forms. 3^(2-x) = 2^x Thanks.
97. ### Trig problem

What is a coterminal angle with 170 degrees?
98. ### trig

solve sin x-1=0 for 0degress<x<360 degrees
99. ### trig

How do I find the "exact value" for the arcsin of -pi/3 radians?
100. ### trig

Find sin è/2 for cos è = 1/4 and è lies in Quadrant I.