What is the input of arccos

The arccos function is the inverse of the cosine function. It returns the angle whose cosine is a given number. Try this Drag any vertex of the triangle and see how the angle C is calculated using the arccos() function.

Step-by-step explanation:

i got this from https://www.mathopenref.com/arccos.html

It returns the angle whose cosine is a given number.

Step-by-step explanation:

For every trigonometry function, there is an inverse function that works in reverse. These inverse functions have the same name but with 'arc' in front. (On some calculators the arccos button may be labeled arccos, or sometimes cos-1.) So the inverse of cos is arccos etc. When we see "arccos x", we understand it as "the angle whose cosine is x"

cos30 = 0.866Means: The cosine of 30 degrees is 0.866

arccos 0.866 = 30Means: The angle whose cosine is 0.866 is 30 degrees.

Use arccos when you know the cosine of an angle and want to know the actual angle.

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

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combine all like terms then its just a 2 step equation