Answer:
c = 27.9
B = 62.13°
C = 89.90°
Step-by-step explanation:
We are given the following values:
A= 121.59°, a = 27.9 cm, b = 52.6 cm
a) Finding side c
We would use Pythagoras Theorem
c² = a² + b²
c = √(a² + b²)
c = √(27.9² + 52.6²)
c = 59.54cm
≈ Approximately = 59.5cm
b) Finding B
We would be using Cosine rule to find Angle B
Cos B = a² + b² - c²/2ab
B = arc cos ( a² + c² - b²/2ac)
B = arc cos( 27.9² + 59.5² - 52.6²/ 2 × 27.9 × 59.5)
B = 62.13268°
B = 62.13°
c) Finding C
We would be using Cosine rule to find Angle C
Cos C = a² + b² - c²/2ab
C = arc cos ( a² + b² - c²/2ab)
C = arc cos( 27.9² + 52.6² - 59.5²/ 2 × 27.9 × 52.6)
C = 89.9°
351
I did the math in my calculator
Also learned how to do this last year
Answer:
-2 6/25
Step-by-step explanation:
First you take -11 1/5 and simplify the fraction into a decimal. -11 + (-0.20) = -11.2 Now you take the weight value (-11.2lbs) and divide that by the total month value (5 months): -11.2 / 5 = -2.24. Finally, you regroup the answer into a fraction again, so here's your answer: -2.24 = -2 6/25.
Answer:
the degree of x can be added to 120 to get 180. they form a straight line which is 180°. subtract 120 from 180 to get you answer.
180-120=60 so x=60
