O'Reilly logo

Beginning Pre-Calculus for Game Developers by Boris Meltreger, John P. Flynt

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Trigonometric Ratios

You measure angles using degrees and radians. You usually measure the lengths of sides using real numbers. You relate the measurements of angles to the measurements of sides using ratios. A set of six such ratios constitute the primary trigonometric ratios. You have already examined the ratio that generates the sine of the angle (theta) θ.

If you extend the discussion that began with the sine of the angle θ, you can then work forward to explore the ratios defined for the cosine and tangent of θ. You then move on from there to explore the ratios defined for cotangent, secant, and cosecant. Figure 12.8 illustrates the standard form of the right triangle with the sides explicitly identified.

Figure 12.8. The opposite and adjacent ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required