Answer:
67.6 degrees
Explanation:
You need to use cosine to solve this.
so, cosine is adjacent leg over hypotenuse. which is 8/21. and it is 0.381.
and when you do cos^-1 (0.381), then it is 67.6.
The answer is 67.6
You have to find the angle that has cos=8/21=0.381.
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