The following angle measures could form a triangle (a)
111º, 28°, 31°
A
True
B
False

(b) Explain why the angle measures form a triangle or do not form a triangle.

False

Step-by-step explanation:

All the angles in a triangle must add up to 180 degrees. Let's test this with the values given:

These angles only add up to 170°. Therefore, the answer is false, and these measures do not form a triangle.

step-by-step explanation:

just plug in each number for x and see which ones work and don't

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,