Question

-10 sin (15 п/14) / sin (п/14) Помогите пожалуйста!

Answer 1

Согласно формулам приведения:
sin(15π/14)=sin(π+π/14)=-sin(π/14)
Тогда исходное выражение принимает вид:
-10sin(15π/14)/sin(π/14)=10sin(π/14)/sin(π/14)=10
Ответ: 10

Answer 2

Calculating -10 * sin(15π/14) / sin(π/14)

To calculate the expression -10 * sin(15π/14) / sin(π/14), we can use the trigonometric identities and the value of sin(π/14) to find the result.

The value of sin(15π/14) is not provided in the search results. Therefore, I will calculate the value using the trigonometric identity sin(x + π) = -sin(x).

First, we can rewrite sin(15π/14) as sin(π + π/14). Using the identity sin(x + π) = -sin(x), we get -sin(π/14).

Now, we can calculate the expression:

-10 * sin(15π/14) / sin(π/14) = -10 * (-sin(π/14)) / sin(π/14)

This simplifies to:

10

So, the value of the expression -10 * sin(15π/14) / sin(π/14) is 10.

This calculation is based on trigonometric identities and the given value of sin(π/14).