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Cosine is a periodic function which is continuous and oscillates between +1 and -1. Therefore, from time to time, it must be 0. cos(x) = 0 whenever x = k*pi/2 for all odd integer values of k (pi/2, 3pi/2, 5pi/2 and so on).
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What is cosine 0?
Cosine 0 is 1
What is the cosine of -90?
Cosine of -90 is 0.
What is the cosine of a ratio that has 0 as its numerator?
If the numerator is 0 AND the denominator is not 0, then the ratio is 0. And cosine of 0 is 1.
What is the formula for the y-intercept of a cosine function?
The Y-Intercept of the cosine function is X = 0, Y = cosine(0) = 1.
How is cos 90 equal to 0?
The Unit Circle is a circle that has a radius of 1 and a center at the origin. If you look at the unit circle 90 degrees is at the point (0,1). Cosine is equal to the x value of a point on the Unit Circle. The line created to the point (0,1) on the unit circle when the degree is 90 is completely vertical, which in turn makes the x value 0 and thus, cosine of 90 = 0. Read more >> Options >> http://www.answers.com?initiator=FFANS
Why does sec 0 equals 1?
Secant is 1 over cosine and cosine 0 equals 1.
Is cos theta is equal to 1?
No, not necessarily. Cosine theta is equal to 1 only when theta is equal to zero and multiples of 2 pi radians or multiples of 360 degrees. This is because cosine theta is hypotenuse over adjacent, and the ratio 1 only occurs at 0, 360, 720, etc. or 0, 2 pi, 4 pi, etc.
How does the tangent function relate to sine and cosine?
Tangent = sine/cosine provided that cosine is non-zero. When cosine is 0, then tangent is undefined.
Does cosine equal 1-sin?
No, it does not.
What is cosine of 0 degree?
It is 1.
Do the equations sine plus cosine and sine squared plus cosine squared both equal 1?
No, they do not.
Sin and cosine values of 0?
sin 0 = 0 cos 0 = 1
