Free Printable #9.7 Law of Sines and Law of Cosines

1.

Use a calculator to find $\cos115\degree$

a)

$-0.4226$

b)

$0.9063$

c)

$-2.1445$

d)

Undefined

2.

Use a calculator to find $\tan95\degree$

a)

$0.9962$

b)

$-0.0872$

c)

$-11.4301$

d)

Undefined

3.

Use a calculator to find $\sin148\degree$

a)

$-0.8480$

b)

$0.5299$

c)

$-0.6249$

d)

Undefined

4.

Find the area of the triangle.

a)

$18.6\ m^2$

b)

$22.8\ m^2$

c)

$48.9\ m^2$

d)

$54\ m^2$

5.

Find the area of the triangle.

a)

$132.6\ m^2$

b)

$287.8\ m^2$

c)

$203.5\ m^2$

d)

$143.9\ m^2$

6.

For which case are you NOT able to use the Law of Sines?

a)

AAA

b)

AAS

c)

ASA

d)

SSA

7.

Use the Law of Sines to find $BC$

a)

5.9

b)

6.7

c)

4.8

d)

7.1

8.

Use the Law of Cosines to find $m\angle A$

a)

$78.6\degree$

b)

$60.6\degree$

c)

$40.8\degree$

d)

$52.8\degree$

9.

Use the Law of Sines to find $m\angle B$

a)

$28.9\degree$

b)

$72.7\degree$

c)

$60.1\degree$

d)

$36.9\degree$

10.

Use the Law of Cosines to find $AC$

a)

$17.3$

b)

$13.6$

c)

$12.4$

d)

$16.2$

#9.7 Law of Sines and Law of Cosines

Total questions: 10

Worksheet time: 3hrs 30mins

Similar Resources on Wayground