There are many ways that allow you to work out the values for the trigonometric ratios of the most common angles (0°, 30°, 45°, 60°, and 90° ). Here is one of them.

A final Note….

The above did not address the 3^{rd} trigonometric ratio – Tangent. However given that we know that **tan (θ) = sin( θ ) / cos( θ )**; then we can use the above method to work out the tangent of these angles.

There are many ways that allow you to work out the values for the trigonometric ratios of the most common angles (0°, 30°, 45°, 60°, and 90° ). Here is one of them.

A final Note….

The above did not address the 3

^{rd}trigonometric ratio – Tangent. However given that we know thattan (θ) = sin( θ ) / cos( θ ); then we can use the above method to work out the tangent of these angles.## Nouri Dib