Answer:
f(g(x)) = -1
Step-by-step explanation:

Answer:
thx
Step-by-step explanation:
Answer:
x = 8.39
y = 55.2
Step-by-step explanation:
9² + 1² - 2(9)(1)cos(50) = x²
x = 8.39
9/sin(y) = x/sin(50)
sin(y) = 0.8215200692
y = 55.23724927
Think of this, 77/100 is 0.77. 0.77 is 77%.
Just use this for the rest of the questions.