Answer:
if its thousandths, its 4 x 10^-1. If you mean 4000, its 4 x 10^3
Step-by-step explanation:
Answer:
Cos x sec^2 x
Cos x (1 + cot x)
Cos x / sin x • 1
Step-by-step explanation:
Answer:
60.9
Step-by-step explanation:
D because square roots of negative numbers are imaginary