Question

Tg pi/4+sin ^2 a -1 /cos^ 2 a -1

Answer 1

Ответ:cos 4

Пошаговое объяснение:

Answer 2

To simplify the given expression, let's break it down step by step:

1. Tg(pi/4) is equal to 1, as tangent of pi/4 (45 degrees) is the same as the ratio of the lengths of the sides of an isosceles right triangle (opposite side/adjacent side), which is 1.

2. Rewrite the expression with the simplified value of tg(pi/4):

   1 + sin^2(a) - 1 / cos^2(a) - 1

3. Simplify the trigonometric expressions:

   • sin^2(a) + cos^2(a)

The trigonometric identity sin^2(a) + cos^2(a) = 1, holds true for all values of 'a'.

4. Therefore, the final simplified expression is:

   1

So, the simplified expression is equal to 1.