Free Printable Law of Sines, Law of Cosines, and area formulas

Free Printable Worksheets

Worksheets

Law of Sines, Law of Cosines, and area formulas

Total questions: 8

Worksheet time: 36mins

Name

Class

Date

1.

Rearrange the Law of Cosines formula to solve for angle B.

a)

b)

c)

2.

a)

A

b)

B

c)

C

d)

D

3.

Find m<B

a)

A

b)

B

c)

C

d)

D

4.

Find QR

a)

34.7 km

b)

35.7 km

c)

36.7 km

d)

33.7 km

5.

Find m<C

a)

A

b)

B

c)

C

d)

D

6.

What is the length of side x?

a)

99 cm

b)

101 cm

c)

103 cm

d)

105 cm

7.

If the sides of a triangle are 3, 9, and 10, what is the area?

a)

13.3

b)

14.3

c)

12.3

d)

15.3

8.

For triangle ELF, side e = 19 in, f = 14 in, and <L = 32 degrees. Find the area.

a)

67.5 square inches

b)

68.5 square inches

c)

69.5 square inches

d)

70.5 square inches

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