Question

the equation cos-1 3.4/10 =x can be used to determine the measure of angle BAC. What is the degree of measure angle BAC? Round to the nearest whole degree.

Answer 1

70°

Explanation:

x =
`cos^(-1)`(
`(3.4)/(10)`) ≈ 70°

Answer 2

<BAC= 70 degrees.

Explanation:

The given equation to find angle BAC that is x is :

x=
`cos^(-1) (3.4)/(10)`

Or ,
`x=cos^(-1) 0.34`

Using calculator to find the arc of cosine0.34 we have :

x=70.1231

This when rounded to nearest whole degree is 70 degrees.

<BAC= 70 degrees.