Please help me i need it done asap 50 points thank you

solution given:

7x-3=60°[each angle of equilateral triangle is 60°]

7x=60+3

x=63/7

x=9 is a required answer.

idk

step-by-step explanation:

use that smart brain

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,