# Precalculus : Solving Right Triangles

## Example Questions

2 Next →

### Example Question #11 : Trigonometric Applications

Find the area of the given isosceles triangle: Possible Answers:     Correct answer: Explanation:

The first step is to divide this isosceles triangle into 2 right triangles, making it easier to solve: The equation for area is We already know the base, so we need to solve for height to get the area.   Then we plug in all values for the equation: ### Example Question #12 : Trigonometric Applications

Find the area of the given isosceles triangle: Possible Answers:     Correct answer: Explanation:

The first step toward finding the area is to divide this isosceles triangle into two right triangles: Trigonometric ratios can be used to find both the height and the base, which are needed to calculate area:      With both of those values calculated, we can now calculate the area of the triangle: ### Example Question #351 : Pre Calculus Solve the right triangle given that a=5, b=12, and A=22.620°

Possible Answers:

None of these answers are correct.

B=90°

C=67.380°

c=169

B=90°

C=67.380°

c=13

B=67.380°

C=90°

c=13

B=67.380°

C=90°

c=17

Correct answer:

B=67.380°

C=90°

c=13

Explanation: C is given as 90°.

A is given as 22.620°

a is given as 5

b is given as 12 Therefore...    All angles of a triangle add up to equal 180°.     2 Next →

### All Precalculus Resources 