Question

1 -cos в квадрате x - sin в квадрате x

Answer 1

$1 - cos^2x - sin^2x = 1 -(cos^2x + sin^2x) = 1-1 = 0$

Answer 2

1-cos^2x=sin^2x
sin^2x-sin^2x=0

Answer 3

To simplify the expression, we can use the trigonometric identity:

sin²(x) + cos²(x) = 1

Applying this identity, we can rewrite the expression as:

1 - cos²(x) - sin²(x)

Since sin²(x) + cos²(x) equals 1, the expression simplifies to:

1 - 1

Which equals zero:

0