Question

$\frac{ \cos(80) }{ \sin(10) } + \cos(59) \times \csc(31) = 2$

Answer 1

Cos(90-10)/sin(10)+cos(90-31)xcosec31
Sin10/sin10+sin31/sin31
1+1=2
Identity used
Cos(90-a)=sina sin(90-a)=cosa
Coseca=1/sina