Question

(sin theta + cos theta)² =​

Answer 1

Step-by-step explanation:

$(\sin(theta) + \cos(theta) ) {}^{2} = (\sin( {theta} )) {}^{2} + (\cos(theta ) ){}^{2} + 2 \sin(theta ) \cos(theta) = 1 + 2 \sin(theta) \cos(theta)$