Question

2 sin2 60° + 2 cos2 60° = ?​

Answer 1

Answer:

2 sin² 60° + 2 cos² 60°

= 2 ( sin ² 60° + cos ² 60° )

= 2 × 1

= 2

As we know ,

sin² α + cos² α = 1

Answer 2

Step-by-step explanation:

$2( \frac{ \sqrt{3} }{2} )^{2} + 2( \frac{1}{2} )^{2} = 2( \frac{3}{4} ) + 2( \frac{1}{4} )$

$= ( \frac{3}{2} ) + ( \frac{1}{2} )$

$= \frac{4}{2} = 2$