The answer to the first question is 7(3.14)/6.
the answer to the second question is quadrant 2
Answer:
31536000
Step-by-step explanation:
if the average heart beats 60 beats per minute and there are 525600 minutes in a year multiply
Cos9x - cos5x = -2sin2x.sin7x
sin17x - sin3x = 2sin7x.cos10x
so f(x) =

=
Answer:
The middle one
Step-by-step explanation: