#### Question

# Prove: Cos A / Cos A - Sin A = 1 / 1 - Tan A?

Prove: Cos A / Cos A - Sin A = 1 / 1 - Tan A

#### Answers

cos A /( cos A - sin A )

divide numerator and denominator by cos A

( cos A / cos A ) / [ (cos A - sin A )/cos A ]

1/ [ ( cos A / cos A ) - ( sin A / cos A ) ]

1/ ( 1- tan A )

#1

1st type correctly , then divide top and bottom by cos A...not hard

#2

R.H.S =1/1-TanA= cosA/cosA-sinA put tanA=sinA/cosA

#3