We know that
sin²x+cos²x=1
so
clear cos x
cos x=(+/-)√[1-sin²x]
in this problem
<span>Angle 0 is in quadrant 1 -----> cos o and sin o are positive
</span>sin o=2/5
cos x=√[1-(2/5)²]----> cos o=√[1-4/25]----> cos o=√[21/25]---> cos o=√21/5
the answer is
cos o=√21/5
Answer:s=10.50 and p=27
Step-by-step explanation:
Answer:3
Step-by-step explanation:
Side by side on the left ,side by side on the right and two in the middle
Just compare it as a regular graph.:)
Answer:
d
Step-by-step explanation:
if am not wrong I think the answer is d the last one