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Mathematics, 22.08.2019 21:30 jaylen2559
Prove algebraically the the following equation is an identity: (2 cos x + 3 sin x) ^2 + ( 3 cos x - 2 sin x)^2 =13
sorry i just updated the question b/c i was trying re edit this question with a plus sign in one of the equation so people don't get confused. but i couldn't find the edit button so just copied and pasted it again but updated.
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Prove algebraically the the following equation is an identity: (2 cos x + 3 sin x) ^2 + ( 3 cos x -...
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