Math
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Secant Calculator.
Calculate secant from an angle in degrees.
On-device calculationNo signup
01
Set your values
Results update as you type.
02 / ANSWER
Angle (radians): 1.047198
Cosine: 0.5
Secant: 2
Results update automatically as you type.
Use Cases
Trigonometry Homework
Quickly verify secant values for angles in degrees, helping with math assignments and understanding trigonometric relationships.
Example: Find sec(60°) = 2
Engineering Calculations
Use secant values in structural or electrical engineering problems where trigonometric functions are applied to angles.
Example: Calculate sec(45°) ≈ 1.4142
Frequently Asked Questions
- What is the secant of an angle?
- The secant of an angle in a right triangle is the ratio of the length of the hypotenuse to the length of the adjacent side. It is the reciprocal of the cosine function.
- How do I use this Secant Calculator?
- Simply enter the angle in degrees into the 'Angle (degrees)' field and click calculate. The calculator will compute the secant value for you.
- What is the range of the secant function?
- The secant function has a range of (-∞, -1] ∪ [1, ∞). It is undefined for angles where cosine is zero, such as 90° and 270°.
Tips & Common Mistakes
Tips
- Ensure the angle is entered in degrees, not radians, as this calculator only accepts degree input.
- Remember that secant is undefined for angles where cosine is zero, such as 90°, 270°, etc.
- For angles outside 0-360°, the calculator will still compute the secant, but you can reduce the angle modulo 360° for easier understanding.
- Use the reciprocal relationship: sec(θ) = 1/cos(θ) to check your results.
Common Mistakes to Avoid
- Entering the angle in radians instead of degrees, leading to incorrect results.
- Forgetting that secant is undefined at 90° and 270°, and expecting a numerical value.
- Confusing secant with cosecant or cotangent, which are different trigonometric functions.
Last updated: August 13, 2026