we know that
Applying the law of cosines:
c² = a² + b² - 2abcos(C)
where:
a,b and c are sides of the triangle and C is the angle opposite side c
let
a=170 mi
b=200 mi
c=160 mi
that is
160² = 170² + 200² - 2(170)(200)cos(C)
solve for C
25,600 = 28,900 + 40,000 - 68,000cos(C)
25,600 - 28,900 - 40,000 = -68,000cos(C)
-43,300=-68,000cos (C)
cos (C)=0.6367
C=arc cos(0.6367)--------> C=50.45°
hence,
he should turn in the direction of island b by
180 - 50.45 = 129.55 degrees
the answer is
129.55 degrees
Answer:
4
Step-by-step explanation:
Scott has 6 words to memorize and he as done 2/3 of it, therefore the total number of words will be 2/3 of 6 = 4.
2/3 x 6 = 4
Answer:
y=-3x+30
Step-by-step explanation:
This is the commutative property of multiplication because it shows that terms in a multiplication can be rearranged but it will yield the same result.
