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How do you find the value of cot60?

Answer
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Hint: Here we can proceed by finding the sin and cos of the same angle as given and we know that tanx=sinxcosx and therefore we can divide both the values of the sin and cos of the same angle and get the exact value of the cot60.

Complete step by step solution:
Now we are given to find the exact value of cot60
We know that:
sin(60)=32(1)
cos(60)=12(2)
Now we can find the relation between sin,cos,tan to get the value of the cot(60)
Let us consider the triangle ABC right-angled at B
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We know that:
sinθ=perpendicularhypotenuse(3)
cosθ=basehypotenuse(4)
We also know that:
cotθ=baseperpendicular(5)
Now if we divide the equation (3) and (4) we will get:
cosθsinθ=basehypotenuseperpendicularhypotenuse=baseperpendicular
Hence we get that:
cosθsinθ=baseperpendicular(6)
Now we can compare the equation (5) and (6) to get the required relation between sin,cos and tan
On comparing both equation (5) and (6) we can say that:
cotθ=cosθsinθ
So we know the value of sin(60)=32 and cos(60)=12
Now we know that:
cotθ=cosθsinθ
Here putting the value of θ=60 we get:
cot60=cos60sin60=1232=(1)(2)(3)(2)=13
Hence by this method we have got the exact value of the given trigonometric function which is cot60
So in order to calculate cotangent of any angle we need to just divide the cosine and sine of the same angle and we will get the tangent of that angle as we know that:
cotθ=cosθsinθ

So we get the value of cot60=13

Note:
Here in these types of problems where we are asked to find the value of the tangent or cotangent of any angle, we must know the basic values of the sine and cosine of the angles like 0,30,45,60,90 and then we can easily calculate the same angles of the tangent, cotangent, secant, and cosecant of that same angle.
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