The exact value for cos(pi/16) would be :
cos (pi/16) = +/- √1+cosa/2
cos (pi/4) = sqrt2/2
Hope this helps
Answer:
Frank is wrong
Step-by-step explanation:

35 is a multiply by 5 so it is not a prime number.
Answer: the first one is C
the second one is B
Answer:
1st option
Step-by-step explanation:
4
÷ 2
( change mixed numbers into improper fractions )
=
÷ 
To perform the division
leave 1st fraction, change ÷ to × , turn 2nd fraction ' upside down'
=
× 
Answer:
B. -40°F
Step-by-step explanation:
its- clearly lower than -30