Trigonometry Examples

$\sin (x + y) + \sin (x - y \cdot y) = 2 \cos (x) \sin (y)$

Step 1

Multiply $y$ by $y$ by adding the exponents.

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Step 1.1

Move $y$ .

$\sin (x + y) + \sin (x - (y \cdot y)) = 2 \cos (x) \sin (y)$

Step 1.2

Multiply $y$ by $y$ .

$\sin (x + y) + \sin (x - y^{2}) = 2 \cos (x) \sin (y)$