Geometry Problem: Finding Angle in a Square with Given Angles

Published on May 15, 2026

Geometry

Solve for the unknown angle in a square ABCD with points E on AD and F on CD, given specific angles. Uses trigonometry and properties of squares.

Question

Answer

Based on the image provided, we are given a square with a point on the side and a point on the side . We are given that and . We need to find the angle .
Let the side length of the square be . Let the coordinates of the vertices be , , , and .
Point lies on , so its coordinates are for some .
In , we have and .
Thus, .
So, the coordinates of are .
Point lies on , so its coordinates are for some .
In , we have and .
The length .
Then, .
.
.
So, the coordinates of are .
We want to find . Let .
In , we have .
.
We recognize that is the value of .
To verify: .
Therefore, .
Final Answer: