Free Printable Trigonometry #23 --- NO CALCULATOR

1.

What is sin210 $\degree$

a)

- 0.8

b)

0.5

c)

$\frac{\sqrt{3}}{2}$

d)

- 0 .5

2.

In triangle ABC, AB = 12, AC =8 and A = $\frac{\pi}{4}$

Find the area of the triangle

a)

24 $\sqrt{2}$

b)

13 $\sqrt{3}$

c)

48

d)

30

3.

How many solutions are there for $\tan^23x\ =\ 0.7\ ?\ \ \ \ \ \ \ \ 0\le x\le180$

a)

4

b)

6

c)

8

d)

12

4.

If $\cos x=0.6,$ find $\cos2x$

a)

1.2

b)

0.36

c)

- 0.28

d)

- 0.6

5.

In right-angled triangle ABC, AB = 6, AC = 8 and BC is the hypotenuse. Find $\sin B$

a)

0.8

b)

0.6

c)

0.75

d)

0.68

6.

The central angle of a sector is 0.8 radian. The radius of the circle is 12cm. Find the perimeter of the sector

a)

9.6 cm

b)

19.2 cm

c)

24.8 cm

d)

33.6 cm

7.

The area of a unit circle NOT covered by an inscribed square is …

a)

$\frac{\pi-2\sqrt{2}}{2}$

b)

$\frac{3\pi}{4}$

c)

$\pi-2$

d)

$\frac{\pi-1}{2}$

8.

Solve the equation $3\cos x-2\sin^2x=0\ \ \ \ 0\le x\le90\degree$

a)

30 $\degree$

b)

45 $\degree$

c)

60 $\degree$

d)

90 $\degree$

9.

If $\cos x=0.8$ find $\tan x$

a)

1.2

b)

1.3

c)

0.75

d)

0.6

10.

If $\sin x=\frac{1}{3}$ , find the exact value of $\sin2x$

a)

$\sqrt{3}$

b)

$\frac{4\sqrt{2}}{9}$

c)

$\frac{3\sqrt{2}}{4}$

d)

$2\sqrt{10}$

Trigonometry #23 --- NO CALCULATOR

Total questions: 10

Worksheet time: 30mins

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