Question

if cos A = ⅗, calculate the value of Sin A​

Answer 1

Answer:

±45

Step-by-step explanation:

We have:

cosθ=35

Using the Pythagorean identity,

cos2θ+sin2θ=1

So,

925+sin2θ=1

sin2θ=1−925

=1625

∴sinθ=√1625

=±45