Finding theta angle.should be easy one.

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To determine if the angle marked as #2 is equal to the given theta, one can extend the vertical line marking one side of angle #2 until it intersects with the extended horizontal line, forming a right triangle. In this triangle, the angles must sum to 90 degrees. The angle theta (#2) and the upper interior angle of the triangle also add up to 90 degrees, indicating that both angles are equal. This geometric relationship confirms the equality of the two angles. The explanation was well-received, with participants expressing clarity and gratitude.
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finding theta angle...should be easy one.

Homework Statement



if your given theta (as pointed out by the arrow with #1), how do you know the #2 arrow angle is the same?

Homework Equations



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Continue the vertical line marking one side of the angle you label 2 down until it meets the horizontal line that is A sub x extended. Now you have a right triangle. Notice that N sub B is perpendicular to the bar. The interior angles of the triangle add up to 90 and the theta you call 2 plus the upper interior angle add to 90 so the two thetas have to be equal.

Is that clear?
 


wickd! got it...thankx, cheers!
 

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