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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)
What else can I help you with?
What is the exact trigonometric function value of cot 0?
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.
Can a pair with the same x and y value be a function?
Yes; a line at 45 degrees.
What is the exact value of cos 70 degrees?
The exact value is an irrational number, and can't be written on paper with digits.0.34202 is less than 0.000042 percent wrong.Cos(70 deg) is an irrational number and it is impossible to give its exact value.
Using exact values find the numerical value of sin 30 degrees cos 240 degrees plus sin 210 degrees sin 300 degrees?
SQRT(3)/4 - 1/4
Can a function have a limit at every x-value in its domain?
Yes, that happens with any continuous function. The limit is equal to the function value in this case.Yes, that happens with any continuous function. The limit is equal to the function value in this case.Yes, that happens with any continuous function. The limit is equal to the function value in this case.Yes, that happens with any continuous function. The limit is equal to the function value in this case.
What is the arc function for trigonometric relationships?
The trigonometric function of an angle gives a certain value The arc trigonometric function of value is simply the angle For example, if sin (30 degrees) = 0.500 then arc sine ( 0.500) = 30 degrees
What is the exact value for csc 22.5 degrees as a trig function?
2.61
How do numbers affect the trigonometric function?
Trigonometric functions are defined from a numeric domain to a numeric range. So the input number determines whether or not the function is defined for that value and, if so, what the value of the function is.
What is the trigonometric sine value of 9 degrees 59 minutes?
It is 0.1734
What stays the same in trigonometric function?
The fact that the same value is obtained when the angle in increased or decreased by any multiple of 2*pi radians (360 degrees).
What is cos(22 degrees)?
cos(22) is a trigonometric ratio and, if the angle is measured in degrees, its value is 0.9272
How does a scientific calculator compute the value of sin 41.5 degrees?
Trigonometric functions are calculated using a polynomial approximation. The exact polynomial used may be different on different calculators.
What trigonometric function gives the value of pi?
arcsin(1) arccos(0)
Why do you solve trigonometric equations?
Use trigonometric identities to simplify the equation so that you have a simple trigonometric term on one side of the equation and a simple value of the other. Then use the appropriate inverse trigonometric or arc function.
What is cos 22?
cos(22) is a trigonometric ratio and, if the angle is measured in degrees, its value is 0.9272
What is the sin of 73 degrees?
The sine of 73 degrees is approximately 0.9563. This value can be found using a scientific calculator or trigonometric tables. The sine function relates the angle to the ratio of the length of the opposite side to the hypotenuse in a right triangle.
What is the period of a trig function?
The period of trigonometric function is the distance between repetitions of the function. The "x" value of the space it takes to start over.
