1
0
mirror of https://gitlab.com/magicalsoup/Highschool.git synced 2025-01-24 00:21:45 -05:00
highschool/Grade 10/Math/MPM2DZ/Trig Quiz 1.md

47 lines
709 B
Markdown
Raw Normal View History

2019-11-13 09:55:07 -05:00
# Question 1
```math
2019-11-13 11:22:02 -05:00
\because \angle B^\prime = \angle B \quad (\text{Corresonding Line theorem}) \\
\because \angle C^\prime = \angle C \quad (\text{Corresponding Line theorem}) \\
\therefore \triangle AB^\prime C^\prime \sim \triangle ABC \quad (\text{ AA } \sim) \\ \\
\therefore \dfrac{AB^\prime}{B^\prime C^\prime} = \dfrac{AB}{BC} \\
\quad \\
\therefore \dfrac{30}{14} = \dfrac{30+x}{22} \\ \\
\quad \\
14(30+x) = 22(30) \\
\quad \\
x = \dfrac{22(30)}{14} - 30 \\
\quad \\
x = 17.1428571 \approx 17.14
```
```math
\dfrac{AC^\prime}{B^\prime C^\prime} = \dfrac{AC}{BC} \\
\quad \\
\dfrac{y}{14} = \dfrac{y+15}{22} \\
\quad \\
22y = 14y + 14(15) \\
8y = 14(15) \\
y = 26.25
2019-11-13 09:55:07 -05:00
```