trig
posted by don .
find the exact values of the six trig functions of theta equals six pi divided by 8

6π/8 radians = 135°
135° is in quadrant II
The reference angle of 135° is 45°
45° is found in the 11√2 rightangled triangle
In quadrant II , the sine and cosecant are positive
so
sin (6π/8) = 1/√2 , csc (6π/8) = √2
cos (6π/8) = 1/√2 , sec (6π/8) = √2
tan (6π/8) = 1 , cot (6π/8) =1
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