volume_mute
First find \(x\). Then find m(\(\angle{ZYQ})\) and m(\(\angle{PYQ})\)
publish date: 2023/05/23 02:47:00 GMT+10
volume_mute
- x =
- m(∠ZYQ) =
- m(∠PYQ) =
Correct Answer
(1) 25
(2) 115
(3) 65
Explanation
- To find x, use the vertical angles rule where ∠ZYQ and ∠XYP are vertical, then their measures are the same
- 4x + 15o = 7x - 60o
- 3x = 75o
- x = 25o
- Substitute x in the measure of angle ∠ZYQ,
- m(∠ZYQ)= 7x - 60o = 7 * 25o - 60o = 115
- ∠ZYQ and ∠PYQ are supplementary, then
- m(∠PYQ) = 180o - 115o = 65o
Reference
Mathematics for college students, go-math-science.com