How do you find the value of cot 90°?

We need to find the value of cot 90

Solution

On the trigonometric unit circle, cot (90) = 0

Let us find it out

We know that
cot x= cos x / sin x
Hence cot 90= sin 90 /cos 90

As per the values

cos90=0, sin90=1

cot 90= cos 90 / sin 90

cot 90= 0 /1

Therefore cot (90) = 0

Answer

The value of cot 90 = 0

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