How to graph tangents in Excel
TAN Excel Function (Tangent)
TAN Excel function is an inbuilt trigonometric function in excel which is used to calculate the cosine value of given number or in terms of trigonometry the cosine value of a given angle, here the angle is a number in excel and this function takes only a single argument which is the input number provided.
TAN Excel Function
TAN Excel Function is an inbuilt function categorized as Math / Trig function, which returns the Tangent of an angle. The formula for TAN always returns a numeric value.
In trigonometry, a tangent of an angle is equivalent to the ratio of the perpendicular to the base of a right-angled triangle.
TAN Θ = opposite side / adjacent side
Therefore, TAN Θ = a / b
TAN Formula in Excel
Below is the formula for TAN in Excel.
Where number is an argument passed to the function in radians.
The angle that we specify as input is recognizable by the Tangent function only when specified as Radians.
To convert an angle into radians, either uses the RADIANS function or convert the angle into radians by a mathematical relation
Radian = angle degree * (π / 180)
π in Excel is represented by a function PI ()
Therefore, radian = degree * (PI () / 180)
Calculating TAN Value using TAN and RADIANS Function
Calculating TAN Value using TAN and PI Function
The tangent function has many real-life applications; it is widely used in architectures to calculate the heights and lengths of geometric figures. A tangent function used in navigation systems and GPS, aeronautics.
For example, if an airplane is flying at the height of 3000m and it makes an angle to an observer on the ground of 26 °, and we want to find the distance of the plane from the observer.
As we know that TAN Θ = opposite side / adjacent side
Here the opposite side = altitude of the plane from the ground, which is equal to 3000 meters.
And the adjacent side = horizontal distance of the plane from the ground, which is unknown, and we need to calculate it.
So using the formula for TAN, we have
TAN (26 °) = 3000 / x
Therefore, x = 3000 / (TAN (26 °))
In excel, taking the relative reference values, we have,
X = B2 / (TAN (B3 * (PI () / 180)))
X = 6150.91 meters
How to Use TAN in Excel?
Excel TAN function is very simple and easy to use. Let me understand the working of the formula for TAN in excel by some examples.
Tangent in Excel Example # 1
A man with a height of 6 feet is 55 meters away from a tree. He makes an angle of 47 ° for the vision parallel to the ground. We want to calculate the height of the tree.
In order to find the height of the tree, we will use the TAN Θ. In the context of Excel, we will be using the Tangent function.
The height of the tree will be
The height of Man + Distance of Man from tree * TAN (47 °)
Since the height of the man is in feet so we will convert it into meters (1foot = 0.30 meters)
Putting all the relative values in Excel, the formula for the Height of the tree will be
= (0.3 * B2) + (B3 * TAN ((B4 * (PI () / 180))))
TAN Excel output:
The height of the tree is 60.78 meters.
Tangent in Excel Example # 2
Suppose we have five right-angled triangles, given with their angles and length on one side, and we need to calculate the length of the other two sides.
The sum of all the angles on a triangle is equal to 180 °; Therefore, we can easily calculate the third angle.
We know, Sin Θ = opposite / hypotenuse
So, the opposite side length will be Sin Θ * hypotenuse
In Excel, the length of the opposite side (perpendicular side) will be calculated by the TAN formula
= E2 * SIN (C2 * (PI () / 180))
Applying the TAN formula for five triangles, we can get the length of perpendiculars of the triangles
Now, we have two sides of the triangle, the hypotenuse, and the perpendicular side. We can easily calculate the third side (base) using the TAN in Excel.
We know TAN Θ = opposite side / Adjacent side.
So, the adjacent side length will be Opposite side/TAN Θ.
In Excel, the length of the adjacent side (base) will be calculated by the TAN formula.
= F2 / (TAN (RADIANS (C2)))
Applying the TAN formula for five triangles, we can get the length of the adjacent side of the triangle.
TAN in Excel output:
Tangent in Excel Example # 3
An aircraft takes a turn of radius 160 m and flies with a constant bank angle of 87 °, in ideal conditions (no wind fluctuations), calculate the constant ground speed of the aircraft.
The radius of the turn is given by the formula.
Radius of turn = V2/ g * TAN Θ
The radius of turn is 160 meters; the constant bank angle is 87 °, g is the acceleration of gravity whose value is 9.8 m / s2, so the ground speed will be
V = (Radius of turn * (g * TAN Θ))1/2
Applying the above TAN formula in Excel with the reference values, we have the TAN formula.
= SQRT (B2 * (9.8 * (TAN (RADIANS (B3)))))
SQRT is an Excel built-in function that computes the square root of a number.
TAN in Excel output:
So, the ground speed of the aircraft is 172.97 m / s
Tangent Function Example # 4
We have a formula for TAN denoted by f (x) = 2c * TAN2Θ, where the c is a constant value equal to 0.988. The variant value is the value of Θ, and the formula for TAN depends on the value of Θ. We need to plot the graph of the given tangent function.
Using the Excel TAN function, we will then calculate the values of the function, so taking the reference values as input, we have the TAN formula,
= 2 * 0.988 * (TAN (RADIANS (2 * B3)))
Applying the TAN formula to other cells we have,
TAN in Excel output:
Tangent Function Graph:
This has been a guide to TAN Excel Function. Here we discuss the TAN Formula in excel and how to use the TAN function along with excel example and downloadable excel templates. You may also look at these useful functions in excel -
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