MHB Applying Trigonometric Functions

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To solve for the length of line segment TU in a non-right triangle using basic trigonometric functions, two equations can be established based on tangent ratios. The first equation, tan(53.8°) = y/x, relates the height to the base segment UV, while the second equation, tan(38.8°) = y/(x + 12.5), incorporates the additional length. By solving these two equations simultaneously, the values of x and y can be determined. This approach avoids the use of sine or cosine laws, focusing solely on fundamental trigonometric principles. The method effectively demonstrates how to manipulate trigonometric functions for complex scenarios.
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Okay, so I know how to apply basic trigonometric functions to solve right triangles. However, I am not quite sure how to manipulate trigonometric functions to solve for more complex questions involving non-right triangles, like the question I have attached. I have to use the basic trigonometric functions only to solve this question (no sine law or cosine law, etc.) My objective is to find the length of line segment TU. Any help would be greatly appreciated! Thanks.
 

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I would let $x=\overline{UV}$ and $y=\overline{TU}$ then state:

$$\tan(53.8^{\circ})=\frac{y}{x}$$

$$\tan(38.8^{\circ})=\frac{y}{x+12.5}$$

Now you have two equations in two unknowns...
 
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