Hi,

for 0 < θ < π sin θ = 1/2,   θ = 30°

θ	radians	sin θ	cos θ	tan θ

0°	0	0	1	0

30°	π/6	1/2	√3/2	√3/3

45°	π/4	√2/2	√2/2	1

60°	π/3	√3/2	1/2	√3

90°	π/2	1	0	─

sin θ = 1/2,   θ = 30°

0r

following (cosx, sinx) Unit circle Summary maybe helpful to You in Your Studies



 

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