Question

Sin150= ctg(-300°)= Срочно

Answer 1

Ответ:

1)0,5

2)

$\frac{ \sqrt{3} }{3}$

Answer 2

Ответ:sin150=sin(180-30)=sin30=1/2

Ctg(-300)=-ctg(360-60)=√3/3

Объяснение:

Answer 3

To calculate the values of trigonometric functions, we need to use the unit circle or the trigonometric identities. Let's calculate the values you requested:

1. Sin(150 degrees): We know that sin(θ) = sin(180° - θ). So, sin(150°) = sin(180° - 150°) = sin(30°).

Now, for sin(30°), you can either use the unit circle or remember the value: sin(30°) = 1/2

2. Ctg(-300 degrees): Cotangent (ctg) is the reciprocal of the tangent function. We know that cot(θ) = 1 / tan(θ).

Now, for ctg(-300°), you can find the tangent of the positive angle (60°) and take its reciprocal: tan(60°) = √3

So, ctg(-300°) = 1 / tan(60°) = 1 / √3.

Therefore, the values are: Sin(150°) = 1/2 Ctg(-300°) = 1 / √3 ≈ 0.577.