Question

3sin п/2+cosп/2-sinп/6
Вычислите

Answer 1

Объяснение:

$3 \sin( \binom{\pi}{2} ) + \cos( \binom{\pi}{2} ) - \\ - \sin( \binom{\pi}{6} ) = 3 \times 1 + 0 - \frac{1}{2} = \\ = 3 - \frac{1}{2} = \frac{5}{2} = 2 \frac{1}{2} = 2.5$