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Question

Evaluate the value of cot90°


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Solution

We need to find the value of cot90°

As per the trigonometric unit circle

cot90°=0

Now let's find out using the terms cos and sin

We know that
cotx=cosxsinx
cot90°=cos90°sin90°

As

cos90°=0,sin90°=1

cot90°=01=0

Hence, the value of cot90°is 0


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