化简 (7+4)/(cot(x))

解答

化简

\frac{7 + 4}{cot ( x )}

11 tan (x)

求解步骤

\frac{7 + 4}{cot ( x )}

数字相加:

7 + 4 = 11

= \frac{11}{cot ( x )}

使用基本三角恒等式:

\frac{1}{cot ( x )} = tan (x)

= 11 tan (x)

s im pl i f y \frac{12 m ^{2} n ^{2} + 16 m ^{3} n ^{3} - 20 m ^{4} n ^{2}}{4 m ^{2} n ^{2}}

f a c t or 54 x^{4} + 27 x^{3} a - 16 x - 8 a

e x p an d (x^{2} - 3 y^{2})^{5}

s im pl i f y 81 a 7 - b^{5}

e x p an d 2 (x - m)^{3} + 4 (x - m) - 5