Question

Prove the following ​

Answer 1

=tan45/(1/cos60) + (1/cos60)/Tan45 - 5cos0/sin90

=cos60 + 1/cos60 - 5cos0/sin90

=1/2 + 1/(1/2) - 5(1)/(1) reason: cos60=1/2

= 1/2 + 2 -5

=(1+4-10)/2 cot45=tan45=1

=-5/2 cos0=sin90=1