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5 votes
5 votes
Find a.

Round to the nearest tenth:
2 cm
150
105
a = [? ]cm
Law of Sines: sin A sin B
sin C
b

Find a. Round to the nearest tenth: 2 cm 150 105 a = [? ]cm Law of Sines: sin A sin-example-1
User Parascus
by
3.2k points

1 Answer

16 votes
16 votes

Answer:

1.8 cm to the nearest tenth.

Explanation:

The angle opposite side a = 180 - 105 - 15 = 60 degrees.

By the Sine Rule:

a / sin 60 = 2 / sin 105

a = 2 * sin60/ sin 105

= 1.79315

User Marek Puchalski
by
3.0k points