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Find the missing side round your answer to the nearest tenth
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11 votes
11 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
User Iannazzi
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2.6k points

1 Answer

27 votes
27 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
User James Gupta
by
2.6k points
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