Trigonometry Answers

if tan a-tan b=p and cot b-cot a=q then cot(a-b)is?

sin60=?
tan60=?
sec60=?

given that sin Ɵ = 2/55 and cos Φ = -2/5 with Ɵ and Φ in Q-II.

1. Determine cos Ɵ?

2. Find sin Φ?

3. What is sin (Ɵ+Φ)?

4. Find cos (Ɵ+Φ)?

5. Determine tan (Ɵ-Φ)?

6. Equivalent to sin (Ɵ-Φ)?

verify each identity
9. cos (θ + (π/2)) = -sinθ
10. (sin (α - β))/(sin α cos β) = 1 - cot α tan β
11 sin t cos t(tan t + cot t) = 1

solve each equation on the interval [0,2π)
12. sin 3x = -1/2
13. sin 2x + cos x = 0
14. 2 sin^2 x + cos x = 1
15. 2 cos^2 x - 3 cos x +1 = 0
16. cos x = -0.092
17. tan x sec x = 3 tan x
18. tan^2 x - 3 tan x - 2 = 0

In a triangle, Angle "A" is known, and the length of the two adjoining sides. How to find the length of the third side?

sin α = 4/5, α lies in quadrant II cos β = 5/13, β lies in quadrant I find the exact value of the following 1. cos (α + β) 2. tan (α - β) 3. sin 2α 4. cos β/2 verify each identity 9. cos (θ + (π/2)) = -sinθ 10. (sin (α - β))/(sin α cos β) = 1 - cot α tan β 11 sin t cos t(tan t + cot t) = 1

sin α = 4/5, α lies in quadrant II
cos β = 5/13, β lies in quadrant I
find the exact value of the following
1. cos (α + β)
2. tan (α - β)
3. sin 2α
4. cos β/2

verify each identity
9. cos (θ + (π/2)) = -sinθ
10. (sin (α - β))/(sin α cos β) = 1 - cot α tan β
11 sin t cos t(tan t + cot t) = 1

solve each equation on the interval [0,2π)
12. sin 3x = -1/2
13. sin 2x + cos x = 0
14. 2 sin^2 x + cos x = 1
15. 2 cos^2 x - 3 cos x +1 = 0
16. cos x = -0.092
17. tan x sec x = 3 tan x
18. tan^2 x - 3 tan x - 2 = 0

find the rest of the sides and degress of the triangle.
A= ?
B= ?
C= 95 degress
a= 2
b= 3
c= ?
area= ?

bill is walking up a hill that is 2000 feet, the elevation that he is walking is 23 degress. how many feet did it talk bill to talk up the hill?