Step-by-step explanation:
if you need any explanation you can ask
Answer:
It’s 4.24 but does it need to be rounded?
Step-by-step explanation:
Answer:
176 much longer
Step-by-step explanation:
22 x 9 = 198
198 - 22 = 176
= 176
7π/12 lies in the second quadrant, so we expect cos(7π/12) to be negative.
Recall that

which tells us

Now,

and so
