Question

6(1-cos a)(1+cos a)/sin2a

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

To simplify the expression $\frac{6(1-\cos a)(1+\cos a)}{\sin^2 a}$, we can use trigonometric identities.

Step 1: Simplify the numerator Expand $(1 - \cos a)(1 + \cos a)$: $(1 - \cos^2 a) = \sin^2 a$

Step 2: Substitute the simplified numerator back into the expression: $\frac{6 \cdot \sin^2 a}{\sin^2 a}$

Step 3: Cancel out the common factor of $\sin^2 a$ in the numerator and denominator: $\frac{6}{1}$

The simplified expression is just $6$.