sin(-120)=sqrt(3)/2
cos(-120)=-1/2
tan(-120)=-sqrt(3)
csc(-120)=2/sqrt(3)
sec(-120)=-2
cot(-120)=-1/sqrt(3)
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Six.
Sine Cosine Tangent ArcSine ArcCosine ArcTangent
120 ÷ 6 = 20
They are all one-to-one as they all pass the vertical line test.
All the trigonometric functions are derived from the right angled triangle. If we consider the three sides (AB, BC, CA) of a triangle and the included angle. There is a possibility of getting six functions based on the ratios like AB/AC, BC/AC, AB/BC, BC/AB, AC/BC, AC/AB . So we will have six trigonometric functions