Question

1-sin2a/cos2a упростить

Answer 1

(sin^2 a+cos^2a-2sinacosa)/(cos^2a-sin^2a)=(cosa-sina)^2/(cosa-sina)(cosa+sina)=(cosa+sina)/(cosa+sina)

^2- это означает в квадрате

Answer 2

1 - sin^2a/cos^2a

To simplify this expression, we can use the trigonometric identity: sin^2a + cos^2a = 1

So, we can rewrite the expression as:

1 - (sin^2a/cos^2a) = 1 - tan^2a

Now, we can simplify further by using another trigonometric identity: 1 - tan^2a = sec^2a

Therefore, the simplified expression is:

sec^2a