SOLUTION: Find exact value for given trig fuctions of an angle (measured in degrees and radians)
A) Sin495°
B) Cos810
C) tan18π/6
D) Cos 13π/4
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Question 419429: Find exact value for given trig fuctions of an angle (measured in degrees and radians)
A) Sin495°
B) Cos810
C) tan18π/6
D) Cos 13π/4
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Find exact value for given trig fuctions of an angle (measured in degrees and radians)
A) Sin495°
B) Cos810
C) tan18pi/6
D) Cos 13pi/4
..
A) sin 495 deg
495-360=135 which is a 45 deg reference angle in quadrant II
ans:sin 495 deg = sqrt(2)/2
..
B)cos 810 deg
810-720=90 deg reference angle
ans:cos 810=0
..
C)tan18pi/6
18pi/6=3pi=pi reference angle
ans:tan18pi/6=0
..
D) Cos 13pi/4
13pi/4=pi/4 reference angle in quadrant I
ans:Cos 13pi/4=sqrt(2)/2
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