Question

Sin2 y cos2 y/cos y - cos3 y Упростите выражение..... Помогите прошу

Answer 1

Sin2ycos2y:(-2sin(-y)sin2y=cos2y/2siny

Answer 2

Simplifying the Expression

To simplify the given expression sin^2(y) + cos^2(y) / (cos(y) - cos^3(y), we can use the trigonometric identity sin^2(y) + cos^2(y) = 1. Let's apply this identity to simplify the expression.

The given expression is: sin^2(y) + cos^2(y) / (cos(y) - cos^3(y)

Using the trigonometric identity sin^2(y) + cos^2(y) = 1, we can simplify the expression to: 1 / (cos(y) - cos^3(y))

This is the simplified form of the given expression.

I hope this helps! If you have further questions or need additional assistance, feel free to ask.