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

Answer:

<BAC= 70 degrees.

Step-by-step explanation:

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

x=$cos^{-1} \frac{3.4}{10}$

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.

Answer 2

Answer:

70°

Step-by-step explanation:

x = $cos^{-1}$($\frac{3.4}{10}$) ≈ 70°