contestada

In ASTU, the measure of ZU=90°, the measure of ZS=25°, and US = 15 feet. Find the length of ST to the nearest tenth of a foot.

Respuesta :

In triangle STU

[tex]\begin{gathered} m\angle U=90 \\ m\angle S=25 \end{gathered}[/tex]

And also the length of US is 15 feet

Since the right angle is U, then the hypotenuse is ST

Since SU is adjacent to < S, then we can use the cosine ratio

[tex]\cos S=\frac{adj}{hyp}[/tex]

Adjacent is SU = 15

m< S = 25 degrees

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