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Secant Calculator.

Calculate secant from an angle in degrees.

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01

Set your values

Results update as you type.

Angle (radians): 1.047198

Angle (radians)

0.000000
Cosine: 0.5

Cosine

0.000000
Secant: 2

Secant

0.000000

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