Two complementary angles make a total of 90, so 3x+6x=90, x=10
39.8°
Step-by-step explanation:
theta = tan^-1(10/12)
Total = 21 feet
if each is 3 feet
21/3 = 7
Therefore, there are 7 sections
Original price is $150 so you times 150 by 0.40
150 x 0.40 = 60
So you take the $150 and you subtract $60 from $150
150 - 60 = 90
So the answer is $90