Question

find value of A:
sin(A+50)=cos(2A=10)

Answer 1

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$Given \: Sin ( A + 50 ) = Cos ( 2A - 10 )$

$\implies Sin ( A + 50 ) = Sin [ 90- ( 2A - 10 )]$

$\implies A + 50 = 90- ( 2A - 10 )$

$\implies A + 50 = 90- 2A + 10$

$\implies A + 2A = 100 - 50$

$\implies 3A = 50$

$\implies A = \frac{50}{3}$

Therefore.,

$\red{ Value \: of \: A }\green { = \frac{50}{3} }$

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Answer 2

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