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Find the missing side. Round to the nearest tenth.

Find the missing side. Round to the nearest tenth.
asked 114k views
3 votes
Find the missing side. Round to the nearest tenth.

Find the missing side. Round to the nearest tenth.-example-1
asked
User Antonin Hildebrand
by
8.6k points

1 Answer

4 votes

Answer:

take 72 degree as reference angle

using cos rule

cos 72=b/h

0.30=6/x

0.30x=6

x=6/0.30

x=20

Explanation:

answered
User Arumand
by
7.6k points
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