Question

If sinA = 4/5, find cosA and tanA. = Draw a rough figure and get the answer.​

Answer 1

Step-by-step explanation:

Sin = opposite / hypotenuse

SinA = 4/5

Therefore

Opposite side = 4

And Hypotenuse = 5

Now

Applying Pythagorean theorem

Adjacent side = √Hypotenuse^2 - Opposite^2

= √ 5^2-4^2

= √25-16

=√9

= 3

Now,

CosA = Adjacent / Hypotenuse

= 3/5

TanA = Opposite / Adjacent

= 4/3

Hope it helps.