Question

2sin20°cos20°...............?​

Answer 1

Ответ:

sin40°(≈0,64).

Объяснение:

2sin20°cos20°=sin2(20°)=sin40°(≈0,64).

Answer 2

The expression you provided, "2sin20°cos20°," appears to be a product of the sine and cosine of 20 degrees. To simplify this expression, we can use the trigonometric identity:

sin(2θ) = 2sin(θ)cos(θ)

In this case, θ is equal to 20 degrees. Applying the identity, we have:

2sin(20°)cos(20°) = sin(40°)

Therefore, the simplified expression is sin(40°).