Step-by-step explanation:
in such a case, where we have all the sides and need angles, the best tool is the extended Pythagoras (for general triangles and not just for right-angled ones) :
c² = a² + b² - 2ab×cos(C)
c is the side opposite of angle C.
the side opposite of B is CA.
so, we have
220² = 100² + 160² - 2×100×160×cos(B)
48,400 = 10,000 + 25,600 - 32,000×cos(B)
12,800 = -32,000×cos(B)
cos(B) = -12,800/32,000 = -0.4
B = 113.5781785...° ≈ 114°
Answer:
y = 7/5x + 7
Step-by-step explanation:
Answer:
The answer is actually 1 because any number to the zero power is just the product of no numbers at all, which is the multiplicative identity, 1.
Step-by-step explanation:
Answer:
128
Step-by-step explanation:
72 people are vegetarians so 200-72=128
