Question

if sin a =3/5 find cos a and tan a​

Answer 1

Answer:

sin a = 3/5 then cos a =4/5 and tan a = 3/4

Answer 2

Answer:

3/4

Step-by-step explanation:

Let, Height from angle A = 3 x. Hypotenuse of triangle = 5 x. By Pythagoras Theorem. ...

4x = base.

Therefore, cosA = = =

And, tanA = = = Method : 2 ( Identities ) ...

Substituting value, ( 3 / 5 )^2 + cos^2 A = 1. cos^2 A = 1 - 9 / 25. cos^2 A = ( 25 - 9 ) / 25. ...

cos A = 4 / 5.

tanA = sinA / cosA. = ( 3 / 5 ) / ( 4 / 5 )

= 3 / 4.