SOLUTION: Given that 15cosA-8sinA=0 find the value of sinA+cosAś2cosA-sinA (A is acute)

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Question 767090: Given that 15cosA-8sinA=0 find the value of sinA+cosAś2cosA-sinA (A is acute)
Answer by solver91311(24713) About Me  (Show Source):
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But , hence

and therefore



Then using





From there



is just arithmetic.

John

Egw to Beta kai to Sigma
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