Q:

Find the value of each variable. Answer in simplest radical form.

Accepted Solution

A:
Answer:x = 5√3; y = 5Step-by-step explanation:Finding y:  The sine function links the 30° angle, the 10 unit hypotenuse and the side opposite the angle, y:sin 30° = 1/2 = y/10                                   Solve the equation of ratios1        y-- = -----  using cross-multiplication first:  2y = 10 → y = 52     10We can now find x either by using a similar approach and the cosine function or by using the Pythagorean Theorem:x² + y² = 10² = 100  →  x² = 100 - y²  =  100 - 5²  = 75If x² = 75, then x = ±√75 = ± (√25)·(√3)   →  ±5√3Since lengths are always positive,   take x = 5√3 as the answer.