Introduction to Trigonometry-Sample Papers

1.   Find:

2.   If sin B= 12/13, then find cot B.                1.

3.   If cosec²θ (1+cosθ) (1-cosθ)= x, then find the value of x.                2

4.   In a triangle ABC, if angle C= 90°, prove that the cosec²A-tan²B =1                3.

5.   Prove that: (sin4θ-cos4θ+1)cosec²θ=2                4.

6.   If acosθ-bsinθ=c, prove that asinθ+bcosθ= ±√a²+b²-c²                4.

7.   

8.   (cosec A-sin A) (secA-cosA)

9.   Find value of √3sinx= cosx                2.

10.   tan x= sin 45°cos45°+sin 30°                2.