Question

Cos A/1+sinA +1+sinA/cos A=2secA

Answer 1

Step-by-step explanation:

Proof

cos A/1+ sin A +1+sin A/cos A

= cos²A +1+2sinA+sin²A/cos A+sin A cos A

=2+2sin A/cos A+ cos A sin A

=2(1+ sin A)/cos A(1+ sin A)

=2/ cos A

= 2sec A

QED.