化简 ((cos^2(a)))/((sin(a))+sin(a))

解答

化简

\frac{( cos ^{2} ( a ) )}{( sin ( a ) ) + sin ( a )}

\frac{cos ( a ) cot ( a )}{2}

求解步骤

\frac{cos ^{2} ( a )}{( sin ( a ) ) + sin ( a )}

使用法则:

(a) = a

(sin (a)) = sin (a)

= \frac{cos ^{2} ( a )}{sin ( a ) + sin ( a )}

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