When is cosine 1

The base of a ladder is placed 3 feet away from a 10 -foot-high wall, so that the top of the ladder meets the top of the wall. What is the measure of the angle formed by the ladder and the ground?

Here we a have a right triangle where we know the lengths of the two legs, that is, the sides opposite and adjacent to the angle. So, we use the inverse tangent function. If you enter this into a calculator set to "degree" mode, you get.

Trigonometric functions are all periodic functions. Since the graphs are periodic, if we pick an appropriate domain we can use all values of the range.

It is read y is the inverse of sine x and means y is the real number angle whose sine value is x. Example: Find the angle "a" We know The distance down is The cable's length is 30 m. Calculate Inverse Sine. Inverse Cosine.

Let us look at the example of Cosine. Here is Cosine and Inverse Cosine plotted on the same graph: Cosine and Inverse Cosine They are mirror images about the diagonal But why does Inverse Cosine get chopped off at top and bottom the dots are not really part of the function So yes there are infinitely many answers Active Oldest Votes.

Improve this answer. No, acosh is inverse hyperbolic cosine. Inverse cosine is acos. Ah thank you : I looked there too but I could not find it because the function name is very 'shortcuted' and there is not a long description to it with an math example. No prob, hope it helped c: — ivan. Yes, if it was not obvious, acos means arccos. Writing cos-1 wouldn't make sense since - would be interpreted oddly.

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