# Solve Right Triangle Worksheet

Solve Right Triangle Worksheet
• Page 1
1.
$\angle$BAC = 70o, $\angle$ACB = 80o.
Find the length of the altitude $\stackrel{‾}{\mathrm{AD}}$.

 a. 3 cm b. 4 cm c. 2$\sqrt{13}$ cm d. 3$\sqrt{3}$ cm

#### Solution:

ABC + BAC + ACB = 180o
[Since sum of the angles in a triangle is 180o.]

ABC = 180o Ã¢â‚¬â€œ (70o + 80o) = 30o
[Substitute and simplify.]

6 sin30o = 6 × 1 / 2 = 3 cm
[Substitute and simplify.]