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21

Step-by-step Answer
PAGE: 797SET: ExercisesPROBLEM: 21
Please look in your text book for this problem Statement

The measures are .

Apply law of cosines to determine angle A.

(Substitute )

Apply inverse function.

Find C

Apply Law of sines.

Substitute .

 

Apply Cross multiplication then .

Divide each side by 8.

Apply inverse function.

The sum of the angle measures of a triangle is .

Substitute .

 

Subtract 50 from each side.

The angles of, and .



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