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There is no value cot 0, because cot 0 is equivalent to 1 / tan 0, which is equivalent to 1 / 0, which is undefined.

That said, the limit of cot x as x approaches 0 is infinity.

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Q: What is the exact trigonometric function value of cot 0?
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What is the exact value of cot 15 half angle formula?

cot 15 = cot(45 - 30) = cot45.cot30 - 1 / cot45 + cot 30


What is the exact trigonometric function value of cot 15 degrees?

cot(15)=1/tan(15) Let us find tan(15) tan(15)=tan(45-30) tan(a-b) = (tan(a)-tan(b))/(1+tan(a)tan(b)) tan(45-30)= (tan(45)-tan(30))/(1+tan(45)tan(30)) substitute tan(45)=1 and tan(30)=1/√3 into the equation. tan(45-30) = (1- 1/√3) / (1+1/√3) =(√3-1)/(√3+1) The exact value of cot(15) is the reciprocal of the above which is: (√3+1) /(√3-1)


Definition of the 6 trigonometric functions?

The six main trigonometric functions are sin(x)=opposite/hypotenuse cos(x)=adjacent/hypotenuse tan(x)=opposite/adjacent csc(x)=hypotenuse/opposite cot(x)=adjacent/opposite sec(x)=hypotenuse/adjacent Where hypotenuse, opposite, and adjacent correspond to the three sides of a right triangle and x corresponds to an angle in that right triangle.


Which of the six trigonometric functions are even functions?

A function f(x) is even if: f(x) = f(-x) In layman's terms this property simply means that any real number in the domain and it's opposite will yield the same function value in the range. To simplify this down even further, an even function, when graphed will appear to be symetric about the y-axis (assuming that you use the standard Cartesian coordinate plane). In the case of trig functions, you would have to test whether the even function property holds true for each. We will the test points π, π/2, or π/4. NOTE: The # signs are present next to the functions that are even: 1. Sine: f(x) = sin(x) -> sin(π/2) = 1, but sin(-π/2) = -1. Since 1 does not equal -1, sine is NOT an even function. 2. #Cosine: f(x) = cos(x) -> cos(π) = -1 = cos(-π). Since both are equal, cosine IS an even function. 3. Tangent: f(x) = tan(x) -> tan(π/4) = 1, but tan(-π/4) = -1. Therefore, tangent is NOT an even function. 4. Cosecant: f(x) = csc(x) -> csc(π/2) = 1, but csc(-π/2) = -1. Therefore, cosecant is NOT an even function. 5. #Secant: f(x) = sec(x) -> sec(π) = -1 = sec(-π). Since the secant function has asymptotes, it IS an even function provided that x does not equal π(2n+1)/2, where n may be all integers. 6. Cotangent: f(x) = cot(x) -> cot(π/4) = 1, but cot(-π/2) = -1. Therefore cotangent is NOT even.


How do you find the area of a triangle using cotangent?

(c2) / (2 cot A + cot B) = Area of Triangle ABC