Question

Evalute sin and cos of the angle θ

Answer 1

Answer is

sine = 0.769

cosine = 0.6389

Explanation:

Given a right angle triangle

Where Height of triangle = 10

And Hypotenuse of triangle = 13

Then, we know Sin Ф = Height/ hypotenuse

or SinФ = 10/13

or Ф = arcsin (10/13)

or Ф = 50.285°

So , sin Ф = sin 50.285° = 0.769

Next we need to cosine.

i.e cos Ф = cos 50.285° = 0.6389

Hence we got, sine = 0.769

And cosine = 0.6389