Question

If cosA = 4/5 then the value of tanA is​

Answer 1

Step-by-step explanation:

Given that cos A = 4/5

As we know,

sin² A + cos² A = 1

sin² A + (4/5)² = 1

sin² A + 16/25 = 1

sin² A = 1 – 16/25

sin² A = (25–16) / 25

sin² A = 9/25

sin A =

$\sqrt{ \frac{9}{25} }$

sin A = 3/5

Now, tan A = sin A ÷ cos A

= 3/5 ÷ 4/5

= 3/4

Answer 2

Here u go

cos A = 4/5 = adjacent/ hypotenuse

refer the attachment ..

hope it helps u....