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Find the missing side round your answer to the nearest tenth

Find the missing side round your answer to the nearest tenth
asked 173k views
3 votes
Find the missing side round your answer to the nearest tenth

Find the missing side round your answer to the nearest tenth-example-1
asked
User Adrift
by
7.8k points

1 Answer

5 votes
Use trigonometric ratios.
Use angle(19)
Adjacent side of angle measure 19 is X
The hypotenuse is 21.
Use the cosine
Cos(19)=x/21

Plug in calculator
(21)cos(19)=19.85

Round to the nearest tenth. Which means the 8 rounds up to 9.

Answer: 19.9
answered
User Andrew Oakley
by
8.7k points
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