Question

15 points

Solve the equation

cos 3x = sin 2x ​

Answer 1

cos 3x = sin 2x

sin (90-3x) = sin 2x

90 – 3x = 2x

90= 2x + 3x

90 = 5x

x = 90/5

x = 18

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Answer 2

Step-by-step explanation:

ANSWER

$\cos3x = \sin2x \sin(90 - 3x) = \sin2x \\ \\ 90 - 3x = 2x \\ \\ = 90 = 3x + 2x \\ \\ = 90 = 5x \\ \\ \frac{90}{5} = x \\ \\ x = 18$

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