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Use sin -1, cos -1 or tan -1 to find the measure of
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Use sin -1, cos -1 or tan -1 to find the measure of

Use sin -1, cos -1 or tan -1 to find the measure of-example-1
User Bergerg
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1 Answer

6 votes
The answer is 23 degrees

cos A = 12/13
A = cos^-1 (12/13)
= 22.61 degrees
User Stemadsen
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