SOLUTION: Find the exact value of each expression
a) sin7π/3
b) cos7π/3
c) sin9π/4
d) cos9π/4
Can you please help me out? Thanks so much in advance:)
Algebra ->
Trigonometry-basics
-> SOLUTION: Find the exact value of each expression
a) sin7π/3
b) cos7π/3
c) sin9π/4
d) cos9π/4
Can you please help me out? Thanks so much in advance:)
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Question 857164: Find the exact value of each expression
a) sin7π/3
b) cos7π/3
c) sin9π/4
d) cos9π/4
Can you please help me out? Thanks so much in advance:) Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! Find the exact value of each expression
a) sin7π/3=√3/2 (reference angle of π/3 in quadrant I)
b) cos7π/3=1/2 (reference angle of π/3 in quadrant I)
c) sin9π/4=√2/2 (reference angle of π/4 in quadrant I)
d) cos9π/4=√2/2 (reference angle of π/4 in quadrant I)
(