Question

es urgente por favor

Answer 1

Respuesta:

Explicación paso a paso:

9)

$\frac{\cot \left(270^{\circ \:}-x\right)}{-\tan \left(x\right)}+\frac{\csc \left(90^{\circ \:}+x\right)}{\sec \left(x\right)}$

$\frac{\cot \left(270^{\circ \:}-x\right)}{-\tan \left(x\right)}+\frac{\frac{1}{\cos \left(x\right)}}{\sec \left(x\right)}$

$-\frac{\cot \left(-x+270^{\circ \:}\right)}{\tan \left(x\right)}+\frac{1}{\cos \left(x\right)\sec \left(x\right)}$

$\frac{-\cot \left(270^{\circ \:}-x\right)\cos \left(x\right)\sec \left(x\right)+\tan \left(x\right)}{\tan \left(x\right)\cos \left(x\right)\sec \left(x\right)}$

$\frac{-\cot \left(-x+270^{\circ \:}\right)\cos \left(x\right)\sec \left(x\right)+\tan \left(x\right)}{\tan \left(x\right)}$