证明 (cos^2(x))/(cos^2(x))=1

解答

证明

\frac{cos ^{2} ( x )}{cos ^{2} ( x )} = 1

真

求解步骤

\frac{cos ^{2} ( x )}{cos ^{2} ( x )} = 1

调整左侧

\frac{cos ^{2} ( x )}{cos ^{2} ( x )}

化简

= 1

我们已展示，在两侧可以有相同的形式

\Rightarrow 真

p ro v e \frac{1 - sec ( x )}{csc ( x )} = cos (x) (cot (x))

p ro v e csc (x) tan (x) sec (x) = sec^{2} (x)

p ro v e tan (x) sec^{4} (x) = \frac{sin ( x )}{cos ^{5} ( x )}

p ro v e csc (x) + cot (x) sec (x) - 1 = tan (x)

p ro v e \frac{3 csc ( x ) - 3 sin ( x )}{tan ( x ) - cot ( x )} = 3 cos^{3} (x)