Activity #25__ Angle - Angle - Side triangle
- Author:
- glassfordpeak
Solve the Real-Life Problem
You are skiing on a mountain with an altitude of 1200 ft. The angle of depression is 21 degrees. Find the distance " x" you ski down the mountain to the nearest foot.
(what is the distance of line segment CB?)
DIRECTIONS
1.
Choose the Segment with Given Length tool and enter 1200 . (line segment AB).
2.
Then use the Move tool to make your line segment vertical. (point A on top).
3.
Choose Perpendicular Line tool and then click point A and then click onto line AB. (should have to 2 lines - -one horizontal and one vertical and are perpendicular to one another). Angle A should be 90 degrees.
4.
Create a point C (pretty far away from point A) on the horizontal line.
5.
Using the Steps toolbar, hide both lines, leaving points A, B, and C.
6.
Using the polygon tool, create a triangle ABC.
7.
Using the Angle tool, find the angle measurement of C.
8.
Use the Move tool to adjust point C until the angle of C is exactly 21 degrees. Make sure angle A is 90.
9.
Using the Distance/Length tool, find the length of line BC.
Your final triangle should look like this.
