Question

I am having my introduction to trigonometry class 10th test tomorrow and I am so scared of it really so scared please give me very those important questions which can come in test I am so afraid please help your classmate​

Answer 1

Answer:

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Step-by-step explanation:

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.

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