Quiz about Trigonometric Functions

Question 1

sin (-x)

Accepted Answer

-sin(x)

Answer

sinx

Answer

$$\left(\sin x\right)^{-1}$$

Answer

cosec x

Question 2

sin 2x =

Accepted Answer

2sinx cosx

Answer

2sinx

Answer

sinx +sinx

Question 3

tan 2x =

Accepted Answer

$$\frac{2 an x}{1- an^2x}$$

Answer

2tanx

Answer

$$\frac{2 an x}{1+ an^2x}$$

Answer

$$\frac{2 an^2x}{1- an^2x}$$

Question 4

cot(A - B) =

Accepted Answer

$$\frac{\cot A\cot B+1}{\cot B-\cot A}$$

Answer

$$\frac{\cot A\cot B-1}{\cot B+\cot A}$$

Answer

$$\frac{\cot A-\cot B}{1+\cot A\cot B}$$

Answer

$$\frac{\cot A\cot B-1}{\cot B-\cot A}$$

Question 5

This is the graph of ....

Accepted Answer

f(x)=cosx

Answer

f(x) = sec(x)

Answer

f(x)= tanx

Answer

f(x)=sinx

Question 6

$$1-\cos4x\ =$$

Accepted Answer

$$2\sin^22x$$

Answer

$$\sin\ x$$

Answer

$$\sin^22x$$

Answer

$$2\sin^2\left(x\right)$$

Question 7

Cos ( x-y)

Accepted Answer

Cos x cos y + sin x sin y

Answer

Cos x cos y + cos x cos y

Answer

Cos x sin y+ cos x sin y

Answer

Cos x cos y - sin x sin y

Question 8

$$Domain\ of\ \sec x\ is\ $$

Accepted Answer

$$R-\left\{\frac{\left(2n+1\right)\pi}{2}:n\ is\ an\ integer\right\}$$

Answer

All Real Numbers

Answer

$$R-\left\{n\pi:n\ is\ an\ integer\right\}$$

Answer

$$\left[-2\pi,2\pi\right]$$

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