Question

Cos 150° + sin 60°- А) 2; Б) 13B В) 0; Г)-1.​

Answer 1

Ответ:

~0,39

Пошаговое объяснение:

Answer 2

To calculate the value of the expression cos 150° + sin 60°, we can use the trigonometric identities and values of common angles.

We know that cos 150° = cos (180° - 30°) = -cos 30° and sin 60° = sin 180° - 120° = sin 120°.

Using the values of cos 30° and sin 120° from the unit circle, we have:

cos 150° = -cos 30° = -√3/2 sin 60° = sin 120° = √3/2

Now we can substitute these values into the expression:

cos 150° + sin 60° = -√3/2 + √3/2 = 0

Therefore, the correct answer is В) 0.