\(\frac{1}{\cos 69^\circ}\)

Geometry Level 1

What is the value of \[ \left(1-\frac{1}{\cos 69 ^\circ}\right)\left(1+\frac{1}{\sin 21 ^\circ}\right)\left(1-\frac{1}{\sin 69 ^\circ}\right)\left(1+\frac{1}{\cos 21 ^\circ}\right)? \]

×

Problem Loading...

Note Loading...

Set Loading...