SOLUTION: Find cos(15pi/4)
Algebra.Com
Question 840332: Find cos(15pi/4)
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Find cos(15pi/4)
15π/4=3π+3π/4
This equals to a reference angle of π/4 in quadrant IV in which cos>0
cos(15π/4)=cos(π/4)=√2/2
RELATED QUESTIONS
Evaluate sec(-... (answered by srinivas.g)
Find a coterminal angle for Q =... (answered by lwsshak3)
how would find a positive co-terminal angle of 15pi/4 (answered by stanbon)
how would find a negative co-terminal angle of 15pi/4 (answered by Alan3354)
which quadrant does 15pi/4 fall... (answered by jim_thompson5910)
How do i evaluate cos(-7pi/2) and tan(15pi) with exact answers... (answered by Alan3354)
cos^2(-4pi/3) + csc^2(9pi/8) +... (answered by lwsshak3)
Find a cofunction with the same value as the given expression: cos pi/15
This is what... (answered by Fombitz)
Is -11pi/4 in the third quadrant? And would the reference angle be 15pi/4? Thanks (answered by stanbon)