Question

Find the value of the trigonometric ratio. Simplify the ratio if possible.

(Hint: You may need to use some pythagorean theorem first!)

Answer 1

Explanation:

Given that,

BC = 8

Ac = 15

We can find AB using the pythagoas theorem.

`AB=√(AC^2+BC^2)\\\\=√(15^2+8^2)\\\\AB=17`

We know that,

`\cos\theta=(B)/(H)`, B is base and H is Hypotenuse

`\cosB=(8)/(17)`

Hence, this is the required solution.