Question

Помогите пожалуйста срочно надо задание: tg170°•ctg190°

Answer 1

Ответ : -1

Решение задания прилагаю

Answer 2

Trigonometric Functions

To solve the given trigonometric expression tg(170°) • ctg(190°), we can use the relationships between trigonometric functions.

Tangent and Cotangent

The tangent (tg) of an angle in a right-angled triangle is the ratio of the length of the side opposite the angle to the length of the adjacent side. The cotangent (ctg) is the reciprocal of the tangent.

Solution

We can express the tangent and cotangent in terms of sine and cosine using the following relationships: - **tg(θ) = sin(θ