Question

Найдите значения 1) cos150*

Answer 1

Ответ:

-0,86602540378

Пошаговое объяснение:

Answer 2

To find the value of cos(150 degrees), we can use the trigonometric identity:

cos(180 degrees - θ) = -cos(θ)

In this case, θ = 30 degrees (because 180 degrees - 150 degrees = 30 degrees).

Now, we know the value of cos(30 degrees) = √3 / 2.

So, cos(150 degrees) = -cos(30 degrees) = -√3 / 2.

Therefore, the value of cos(150 degrees) is -√3 / 2.