Question

If tan A =x/y then find cosA

Answer 1

Answer:

Acording to question

tanA=x/y means we

have given that perpendicular = x and base=y

therefore by Pythagoras theorem

hypotenuse=√x^2-y^2

so cosA=y/√x^2-y^2

hence solved ..

Answer 2

Answer:

Step-by-step explanation:

if tan a=x/y

we know

tan a=sin a/cos a

hence, x= sin a, y= cos a

.'. y=cos a