Question

Find the measure of angle T to the nearest degree.

Answer 1

The answer is option 2.

Explanation:

You have to use Cosine Rule, cosθ = adjacent/hypotenuse. Substitute the following value into the formula :

`\cos(θ) = (adj.)/(hypo.)`

Let θ = T,

Let adj = 7.5,

Let hypo = 19.5,

`\cos(T) = (7.5)/(19.5)`

`T = { \cos( (7.5)/(19.5) ) }^( - 1)`

`T = 67° \: \: (near. \: degree)`