Free Printable 8-5 Practice (Law of Sines)

1.

Find BC to the nearest whole number.

a)

38 yd

b)

23 yd

c)

18 yd

d)

41 yd

2.

Solve for AB. (Hint: consider what you need first.)

a)

18 yd

b)

21 yd

c)

17 yd

d)

28 yd

3.

Find c in terms of sine and the side lengths.

a)

$\frac{13\cdot\sin\left(24\right)}{\sin\left(22\right)}$

b)

$\frac{13\cdot\sin\left(34\right)}{\sin\left(22\right)}$

c)

$\frac{\sin\left(34\right)}{13\cdot\sin\left(22\right)}$

d)

$\frac{\sin\left(24\right)}{13\cdot\sin\left(22\right)}$

4.

Find

m\angle B.

a)

$18\degree$

b)

$36\degree$

c)

$41\degree$

d)

$39\degree$

5.

$Find\ m\angle C.\$

a)

$26\degree$

b)

$16\degree$

c)

$34\degree$

d)

$18\degree$

6.

A pole tilts towards the sun at an 8 $\degree$ from vertical. It casts a 22 ft long shadowl The angle of elevation from the endpoint of its shadow is $43\degree$ to the top of the pole. Find the height of the pole to the nearest foot.

a)

24 ft

b)

23 ft

c)

39 ft

d)

38 ft

7.

The original height of the leaning tower of Pisa is 184.5 ft. At 140 ft away from the base of the tower, the angle of elevation is $59\degree.$ The tower is no longer at a right angle with the ground. What the measure of this angle now?

a)

$56\degree$

b)

$65\degree$

c)

$41\degree$

d)

$80\degree$

8.

Solve for each missing part of the

\Delta ABC

. Round to the nearest whole # in each.

m\angle A=

____

\degree

, c = _____km , b = _______km.

(answer in order and separate with commas)

(a)

8-5 Practice (Law of Sines)

Total questions: 8

Worksheet time: 4mins

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