Question

if sin A =3/5 find @√1-cosA/1+cosA

Answer 1

We know that

sin A = 3/5 = P/H

so Perpendicular = 3 and Hypotenuse = 5

Then by Pythagoras theorem Base = 4

Now according to question

√1-cosA/1+cosA

= √ [1-(4/5)]/[1+(4/5)]

=√ [1/5]/[9/5]

= √ 1/9

= ±1/3

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