How Do You Find the Measure of ∠BAC in Degrees?

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In summary, the measure of $\angle BAC$ is $34^{\circ} - 8^{\circ}$ and the measure of $\angle ABC$ can be found by setting up an equation with a sum of $180^{\circ}$ for the three angles and then solving for $x$.
  • #1
CGuthrie91
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View attachment 2416

Find the measure of angle $\angle BAC$.
 

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  • #2
Re: Find the measure <BAC

Surely $\displaystyle \begin{align*} \angle BAC = 34^{\circ} - 8^{\circ} \end{align*}$. Can you see why?
 
  • #3
Re: Find the measure <BAC

Prove It said:
Surely $\displaystyle \begin{align*} \angle BAC = 34^{\circ} - 8^{\circ} \end{align*}$. Can you see why?

not really
 
  • #4
What about the measure of <ABC?
 
  • #5
CGuthrie91 said:
What about the measure of <ABC?

View attachment 2417

What must the sum of the three angles I have labeled be?
 

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  • #6
Re: Find the measure <BAC

CGuthrie91 said:
not really

The angle of elevation is $\displaystyle \begin{align*} 34^{\circ} \end{align*}$. This is the angle at point A that the segment AB makes with the horizontal.

The angle at A that is made from the slope of the ground with the horizontal is $\displaystyle \begin{align*} 8^{\circ} \end{align*}$. This combined with $\displaystyle \begin{align*} \angle BAC \end{align*}$ gives the angle of elevation.

So $\displaystyle \begin{align*} \angle BAC + 8^{\circ} = 34^{\circ} \end{align*}$, or equivalently, $\displaystyle \begin{align*} \angle BAC = 34^{\circ} - 8^{\circ} \end{align*}$.
 
  • #7
MarkFL said:
https://www.physicsforums.com/attachments/2417

What must the sum of the three angles I have labeled be?
180?
 
  • #8
CGuthrie91 said:
180?

Yes, in degrees. So, can you set up an equation, and then solve for the unknown $x$, representing $\angle ABC$?
 

FAQ: How Do You Find the Measure of ∠BAC in Degrees?

What is the definition of ∠BAC?

The symbol ∠BAC represents the angle formed by the two rays, BA and BC, with a common endpoint A.

How do I find the measure of ∠BAC?

To find the measure of ∠BAC, you can use a protractor to measure the angle or use trigonometric functions if you know the length of the sides of the triangle.

What is the unit of measurement for ∠BAC?

The unit of measurement for angles is degrees (°) or radians (rad). ∠BAC is typically measured in degrees.

Can ∠BAC have a negative measure?

No, the measure of an angle cannot be negative. It is always a positive value.

What is a complementary angle to ∠BAC?

A complementary angle to ∠BAC is an angle that, when added to ∠BAC, forms a right angle (90°). Two complementary angles have a sum of 90°.

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