Since you didn't specify which trigonometric function you're using, I'll give you all of them.
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What trig. function? Sin, cosine, tan, etc.
sin(-120)=-0.580611184
cos(-120)=0.814180971
tan(-120)=-0.71312301
The angle 120 degrees lies on the second quadrant. In radians it is equal to 2Ï€/3. Therefore the sin and cosecant values remain positive where all other functions are negative.
You can have sine, cosine, tangent, cosecant, secant or cotangent of 120 degrees. You can also have arctangent and arccotangent of 120.
The answer could be any one of the following trigonometric functions:sine, cosine, tangent,
cosecant, secant, cotangent,
arctan, arccosecant, arcsecant or
arccotangent.
It could be any one of the following:sine, cosine, tangent,
cosecant, secant, cotangent,
arccosecant, arcsecant, arctangent and arccotangent.
y = sin(x)
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The product of any object and its reciprocal is always the identity. In the case of numbers, 1 (one).
I find it convenient to express other trigonometric functions in terms of sine and cosine - that tends to simplify things. The secant function is even because it is the reciprocal of the cosine function, which is even. The tangent function is the sine divided by the cosine - an odd function divided by an even function. Therefore it is odd. The cosecant is the reciprocal of an odd function, so it is naturally also an odd function.
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