Question

Найти значение выражения sin()+2cossin,если sin()=0,17.

Answer 1

Да это легко, смотрите:

$sin(\alpha -\beta )+2cos\alpha sin\beta =\\ =sin\alpha cos\beta -cos\alpha sin\beta +2cos\alpha sin\beta = \\ =sin\alpha cos\beta + cos\alpha sin\beta =sin(\alpha +\beta )=0,17$

Answer 2

To find the value of the expression sin() + 2cos(), we need to know the value of sin().

You mentioned that sin() = 0.17.

Now, we can substitute this value into the expression:

sin() + 2cos() = 0.17 + 2 * cos()

However, without the value of cos(), we cannot calculate the exact value of the expression. To find the value of cos(), we need either the value of cos() provided or additional information or context to determine it. If you have the value of cos(), please provide it, and I can help you calculate the final result.