# Math

​22.​Angles A and B are located in the first quadrant. If and , determine the exact value of .

How do I get 16/65?

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1. If ???

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bobpursley
2. ​Angles A and B are located in the first quadrant. If sin a =5/13 and cos b= 3/5 , determine the exact value of cos (a+b) .

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