An archer aiming at a target 100 feet away sees that their arrow struck the target 18 inches directly to the left of the "bullseye." By what angle should the archer adjust their aim to hit the bullseye?

Step-by-step explanation:

The correct question is

Triangle shown is an equilateral triangle with a bottom base of 15 ft

we know that

An equilateral triangle has three equal sides and three equal interior angle (each measure is 60 degrees)

step 1

Find the area of triangle

Applying the law of sines

step 2

Find the cost

Multiply the area of the window by the unit rate of $18.75 per square foot