Question

Cos^2+tga*ctga+sin^2a

Answer 1

Ответ:

(sin/cos+cos/sin)*2sincos=(sin^2+cos^2)/cossin  * 2sincos=2*(sin^2+cos^2)=

2

Пошаговое объяснение:

Answer 2

The expression you provided is a combination of trigonometric functions. Let's break it down and simplify it step by step:

1. Start with the expression: cos^2(a) + tan(a) * cot(a) + sin^2(a).

2. Recall the trigonometric identity: tan(a) * cot(a) = 1.

3. Substitute the identity into the expression: cos^2(a) + 1 + sin^2(a).

4. Another trigonometric identity is: sin^2(a) + cos^2(a) = 1.

5. Apply the identity to the expression: 1 + 1 = 2.

Therefore, the simplified value of the expression cos^2(a) + tan(a) * cot(a) + sin^2(a) is 2.