Answer:
B = 40°
a = 23.0
b = 19.3
Step-by-step explanation:
✔️B = 180° - (90° + 50°) => sum of triangle
B = 40°
✔️Reference angle = 50°
Opp = a
Hypotenuse = 30
Adjacent = b
Find a by applying the trigonometric function, SOH:
Sin 50 = Opp/Hyp
Sin 50 = a/30
30 × Sin 50 = a
23.0 = a
a = 23.0 (nearest tenth)
To find b, apply CAH:
Cos 50 = Adj/Hyp
Cos 50 = b/30
30 × Cos 50 = b
b = 19.3 (nearest tenth)
The product of a number is always one. Both numbers cancel each other in the numerator and denominator.
For example: 1/3*3= 1 1/4*4=1
Answer:
4 workers x 1 hour = 4 work hours
4 work hours/3 workers = 4/3
(4/3) x 60 minutes = 80 minutes
Answer it will take three workers approximately 80 minutes to trim a hedge.
Step-by-step explanation: