Understanding the Sine Function

The sine function relates angles to side ratios in right triangles, crucial for fields like architecture, physics, and navigation. It's defined as the ratio of the length of the side opposite the angle to the hypotenuse.

How to Use This Calculator

Select what you want to calculate (angle, opposite side, or hypotenuse)
Enter the two known values
Results update automatically as you type

Practical Example

To find a roof's pitch: If a roof rises 4 meters vertically (opposite) across a 10-meter horizontal span (hypotenuse), the angle is sin⁻¹(4/10) ≈ 23.6°.

Angle (°)	sin(θ)
0	0
30	0.5
45	0.707
60	0.866
90	1

Important Notes

• Angles must be between 0° and 90°
• Side lengths must be positive values
• Ensure consistent units for accurate results

Sine Calculator

Results

Understanding the Sine Function

How to Use This Calculator

Practical Example

Important Notes

Angle Unit Converter

Frequently Asked Questions

Can I use this for non-right triangles?

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Sine Calculator - sin Angle or Opposite over Hypotenuse

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