Question

Sin2A=cos3A
Find A using this equation.

Answer 1

Answer:

$Value \: of \: A = 18 \degree$

Step-by-step explanation:

$Given \: sin 2A = cos 3A$

$\implies sin 2A = sin ( 90 - 3A )$

$Since, \boxed { \green {cos \theta = sin ( 90-\theta ) }}$

$\implies 2A = 90 - 3A$

$\implies 2A + 3A = 90$

$\implies 5A = 90$

$\implies A = \frac{90}{5}$

$\implies A = 18 \degree$

Therefore.,

$Value \: of \: A = 18 \degree$

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Answer 2

Step-by-step explanation:

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