Trigonometric Functions Exercises
MoreTrigonometric Functions Exercises
Pythagorean Theorem
A long time ago, when philosophy ruled and Socrates drank hemlock, a brainiac named Pythagoras proved that for right triangles:a2 + b2 = c2Subsequent admirers and right-angle folks know this equa...
Trigonometric Ratios
Sin, Cos, TanWe've had our fun with triangles and legs, Pythagoras and his invention, and exponents and square roots. But seriously, that stuff isn't at the core of trig.Real trig rocks to the tune...
The Unit Circle
The unit circle sounds so techno—like moon unit or parental unit—but it's not. Really. It's just a simple little circle with a radius of 1. Here's what the unit circle looks like (we'll expla...
Periodic Functions
When a function has values that repeat and repeat over and over (like Macbeth and his obsession with tomorrow and tomorrow and . . .), it's a periodic function.Newsflash: all the trig functions...
Trigonometric Identities
Proving the Pythagorean IdentityRemember Pythagoras? You know...old...Greek...dead? The guy who loved triangles? The gentleman that came up with the Pythagorean Theorem? Yup, that's the one. Well,...