Sin Calculator

The sine function (sin) is one of the fundamental trigonometric functions. It relates an angle of a right triangle to the ratio of the opposite side to the hypotenuse. This calculator instantly computes sin(x) for any angle in degrees or radians.

1. Enter your angle value in the input field
2. Select DEG for degrees or RAD for radians
3. The result updates automatically as you type
4. View exact values for special angles when available

• Calculate sine for any angle value
• Support for both degrees and radians
• π notation support (e.g., π/4, 2π/3)
• Exact values for special angles
• Shows cosecant (csc = 1/sin) as related value
• Real-time calculation

What is the range of sine function?

The sine function always returns values between -1 and 1, inclusive. sin(x) ∈ [-1, 1].

What is sin(90°)?

sin(90°) = 1. This is the maximum value of the sine function.

How do I enter radians?

Click RAD button, then enter the value. You can use π notation like π/4 or 3.14159.