To calculate result you have to disable your ad blocker first.
Half Angle Calculator
Enter the value of the angle in the box below and choose the unit and trig value to calculate half-angle through the half-angle formula calculator.
Table of Contents:
The half-angle identity calculator is an online tool devised to find the value of half-angle using the value of the full angle. Users can choose between different units of angles.
What is the half-angle?
Half-angle is a term widely used in trigonometric calculations and it refers to the half of an angle. They are represented as:
- Sin (θ/2)
- Cos (θ/2)
- Tan (θ/2)
A double angle calculator can be used to find the double angle of trignometric identities.
Half-Angle Formula
The formulas used for half-angle in trigonometry are:
- Sin (θ/2) = ± √(1-cosθ)/2
- Cos (θ/2) = ± √(1+cosθ)/2
- Tan (θ/2) = ± Sin(θ) / 1 +Cos(θ)
How to find Half-Angle?
To find half-angle, you need to follow simple simple steps. Let’s understand this through an example.
Example
Find the half angle of sin 30 degrees.
Solution:
Step 1: Substitute the angle in the formula.
Sin (θ/2) = ± √(1-cosθ)/2
Step 2: calculate.
Sin (θ/2) = ± √(1-cos(30))/2
= ± 0.2588