ΔABC is an isosceles triangle therefore ∡B = ∡C.
ΔDCA is a rectangular triangle therefore ∡y + ∡C = 90°
22° + ∡C = 90° |subtract 22° from both sides
∡C = 68°
Answer:
a.CEA AND DEA
is pair of the supplementary angles
Answer:
Step-by-step explanation:
per lap? If it is not per lap, you are going to have to edit the question.
5 laps = 15 minutes
1 lat = x Cross multiply this is a proportion
5x = 15 minutes Divide by 5
5x/5 = 15/5
x = 3 minutes.
It takes him 3 minutes to do one lap.
Let the smallest no. be x.
x+x+1+x+2=180
3x+3=180
x=59
so the smallest no. is 59
