√secA-tanA/secA +tanA= 1-sinA/cosA
Answers
Answer:
Step-by-step explanation:
√secA - tanA/secA+tanA x √secA-tanA/secA-tanA
=√(sec-tanA)^2 /sec^2A- tan^A [using (a+b) (a-b)=
a^2-b^2
in denominator.
=√(secA-tanA)^2 we know that
sec^2A-tan^2A=1
so,
here root is cancelled,
we are left with (secA-tanA)
secA=1/cosA and tanA= sinA/cosA
= 1-sinA/cosA = R.H.S