Question

Sin30гр - 2tg45гр - cos60гр =​

Answer 1

Відповідь:

sin30+2tg45-cos60=-1/2+2*корень из 2/2-1/2=-1+корень из2.

Покрокове пояснення:

Answer 2

To solve this trigonometric expression, let's break it down step by step:

1. First, let's find the values of sine, cosine, and tangent for the given angles:

   • sin(30°) = 0.5
   • tg(45°) = 1
   • cos(60°) = 0.5

2. Now substitute these values into the expression: sin(30°) - 2 * tg(45°) - cos(60°) = 0.5 - 2 * 1 - 0.5 = 0.5 - 2 - 0.5 = -2

So, the value of the expression is -2.