Free Printable Trigonometry-2(Trigonometric identities)

1.

A= $2\sin^2x-3$ . Find the sum of the integer values of A.

a)

-8

b)

-6

c)

-4

d)

4

e)

6

2.

According to the given information on the figure find |EB| in terms of $\alpha$ .

a)

1+sin $\alpha$

b)

1- $\cos\alpha$

c)

sec $\alpha$ – 1

d)

cosec $\alpha$ – 1

e)

sec $\alpha$ + 1

3.

If $\cos^2x=a$ , then find the result of $\sin^4x-\cos^4x$ in terms of a.

a)

1+a

b)

1-2a

c)

2-a

d)

2-2a

e)

1+2a

4.

If $\sin x-\cos x=\frac{1}{5}$ , then find sinx.cosx.

a)

$\frac{3}{5}$

b)

$\frac{4}{5}$

c)

$\frac{9}{25}$

d)

$\frac{12}{25}$

e)

$\frac{18}{25}$

5.

$\frac{\sin x-\cos x}{2\sin x+4\cos x}=\frac{1}{3}$ is given. Find cotx.

a)

$\frac{2}{3}$

b)

$\frac{1}{2}$

c)

$\frac{3}{5}$

d)

$\frac{5}{7}$

e)

$\frac{1}{7}$

6.

$\frac{2\sin^2x+\cos^2x-2}{\cos^3x}$

a)

sinx

b)

-secx

c)

cosx

d)

2sinx

e)

tanx

7.

$\frac{\operatorname{cosec}x-\sec x}{\tan x+\cot x}+\sin x$

a)

sinx

b)

cosx

c)

tanx

d)

cotx

e)

secx

Trigonometry-2(Trigonometric identities)

Total questions: 7

Worksheet time: 5mins

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