Round your answer to the NEAREST tenth. 3. CCSS MODELING Annabelle and Rich are setting up
decorations for their school dance. Rich is standing
5 feet directly in front of Annabelle under a disco ball.
If the angle of elevation from Annabelle to the ball
is 40° and Rich to the ball is 50°, how high is the
disco ball?

step-by-step explanation:

step-by-step explanation:

what is the figure? attach a picture.

(2,6)

step-by-step explanation:

cause i just did this and got the answer

you're welcome

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.