Answer:
wiat
Step-by-step explanation:
4x+30=90
4x = 60
x = 15
answer is B. 15
Answer:
156.37°
Step-by-step explanation:
We solve this above question, using Cosine rule which is given as:
Cos C = a² + b² - c²/2ab
Let the Angle be represented as: x
Cos x = 310² + 200² - 150²/2 × 310 × 200
x = arc cos [ 310² + 200² - 150²/2 × 310 × 200]
x = 23.63°
The angle, in degrees, that he must turn through to head straight for Island B is given as:
180° - 23.63°
= 156.37°
It would be 725/1000 because u are 3 spaces after the decimal
The equation of the circle:
(h, k) - center
r - radius
We have:
Substitute: