Question

What is the degree measure of angle BAC? Round to the nearest whole degree.

Answer 1

70°

Explanation:

To find x, divide 3.4 by 10 and (0.34) then in a sine, cosine, and tangent chart and find the degree that holds the cosine value closest to or that equals that answer. So, in the cosine column, the nearest value in the chart to 0.34 is 0.3420, which corresponds to 70°. It'll make more sense if you look up that chart.

Answer 2

x = 70.12°

Explanation:

Given : x =
`Cos^(-1)((3.4)/(10))`.

To find : Angle BAC = x .

Solution : We have given

x =
`Cos^(-1)((3.4)/(10))`.

We can write
`(3.4)/(10) = 0.34`

Then

x =
`Cos^(-1)(0.34)`.

x = 70.12°

Therefore, x = 70.12°