Solving for \(\theta\): A Geometry Refresher

  • Thread starter PerryKid
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In summary, the problem involves solving for the unknown angle θ using basic geometry principles. The given information includes a 60 degree angle and a red right triangle. The solution may be more complicated if the blue line is not perpendicular to the slope. Additional information is needed to find θ in this case.
  • #1
PerryKid
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Homework Statement



Solve for [itex]\theta[/itex]

viiE1vs.png


Homework Equations



Unknown

The Attempt at a Solution





I know, but I have forgotten my basic geometry.
 
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  • #2
Hello.

You have a good start with the 60 degree angle that you identified. Try working with the red right triangle in the attachment.
 

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  • #3
I wasn't sure if that was a right angle.

If so, then the entire problem was a piece of cake. If not, then it's more complicated than I thought.
 
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  • #4
PerryKid said:
I wasn't sure if that was a right angle.

I did make the assumption that the blue line shown is constructed to be a "normal line" (i.e., perpendicular to the slope). That's the usual case when working inclined plane problems.

However, if it is not given to be a normal line, then you can't find θ without additional information.
 

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  • #5


As a scientist, it is important to have a strong understanding of geometry, as it is a fundamental tool in many scientific fields. I would recommend reviewing the basic principles of geometry, such as the relationships between angles and sides in triangles and circles, as well as the properties of different shapes. Once you have a solid foundation, you can approach this problem by identifying the given information and using appropriate equations or geometric principles to solve for \theta. Additionally, it may be helpful to practice solving similar problems to strengthen your skills and understanding.
 

FAQ: Solving for \(\theta\): A Geometry Refresher

What is the purpose of solving for \(\theta\) in geometry?

Solving for \(\theta\) allows us to find the measure of an unknown angle in a geometric shape. It is an important skill in geometry as it helps us understand the relationships between angles and shapes.

How do I solve for \(\theta\) using trigonometric ratios?

To solve for \(\theta\) using trigonometric ratios, we use the known sides of a right triangle and the trigonometric functions sine, cosine, and tangent. Depending on the given information, we can use the inverse sine, cosine, or tangent function to find the measure of \(\theta\).

Can I use the Pythagorean theorem to solve for \(\theta\)?

Yes, the Pythagorean theorem can be used to solve for \(\theta\) in a right triangle. By using the known sides of the triangle and the theorem, we can find the missing side and then use trigonometric ratios to find the measure of \(\theta\).

What are some common mistakes when solving for \(\theta\)?

One common mistake is not paying attention to the units of measure. Make sure to check if the given information is in degrees or radians and use the appropriate conversion. Another mistake is forgetting to apply the inverse function when using trigonometric ratios to solve for \(\theta\).

How can I check my answer when solving for \(\theta\)?

You can check your answer by substituting the value of \(\theta\) into the original equation or problem and seeing if it satisfies the given conditions. Another way is to use a calculator to find the approximate value of \(\theta\) and compare it to your answer.

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