Question

If sin A = 4/5, then cos A = ________

Answer 1

Step-by-step explanation:

sin=opp/hyp

cos=adj/hyp

adj=3

cos=३/5

Answer 2

Answer:Cos A=3/5

Given,

SinA=4/5

To find,

CosA=?

Solution:

We know that

Sin^2 A+Cos^2 A=1

Cos^2 A=1-Sin^2 A

Cos^2 A=1-(4/5)^2

=1-16/25

=25-16/25

=9/25

Cos^2 A=9/25

Cos A =√(9/25)

Cos A=3/5

Therefore

Cos A=3/5

Hope this helps you

(^_^)