What is true about triangle lmn? check all that apply.

The correct answers are:

A. LM ⊥ MN

D. The triangle is isosceles.

E. The triangle is a right triangle.

The statements above are true about triangle LMN.

The length of the deck above the top of the mountain will be found as follows:
sin θ=opposite/ adjacent

The height of the mountain will be given  by:
sin15.7=m/5.8
m=5.8sin15.7
m=1.57 km

The distance from the ground to the top of the deck will be:
sin 15.9=h/5.8
h=5.8sin15.9
h=1.588
The height of the deck will be:
h-m
=1.588-1.57
=0.0018
=18 meters