Question

2.
If tan A=4, then sin A cos A​

Answer 1

Answer:

may be yr Question is incorrect............tanA=not only single “4”

Answer 2

Step-by-step explanation:

Step-by-step explanation:

if tan A = 4

we know that, tan A= Sin A/Cos A

Tan A = perpendicular/base

tan A = 4k/1k

using Pythagoras theorem

hypotenuse = √per.²+base²

hypo. = √(4k)²+(1k)²

hypo. = √16k²+1k²

hypo = √17k²

hypo= k√17

Sin A = per/hypo

sin a= 4k/k√17

sin A = 4/√17

similarly

cos A = base/hypo

cos a = k/k√17

cos a = 1/√17