Question

2sin²a/(sin²a-cos²a)Хелппп

Answer 1

Привет!Ответ во вложении.

Answer 2

It seems you've provided an expression:

$\frac{2\sin^2a}{\sin^2a - \cos^2a}$

To simplify this expression, we can use trigonometric identities. Recall that $\sin^2a + \cos^2a = 1$. We can rearrange this equation to solve for $\cos^2a$:

$\cos^2a = 1 - \sin^2a$

Substitute this value of $\cos^2a$ back into the original expression:

$\frac{2\sin^2a}{\sin^2a - (1 - \sin^2a)}$

Simplify the denominator:

$\frac{2\sin^2a}{2\sin^2a}$

Now, cancel out the common factor of $2\sin^2a$:

$\frac{\cancel{2\sin^2a}}{\cancel{2\sin^2a}}$

This simplifies to:

$1$

So, the simplified value of the expression is $1$.