Question

VIsual difference between tan cosine and sine graphs

Answer 1

The Sine Function has this up-down curve (which repeats every 2π radians.
It starts at 0, heads up to 1 by π/2 radians and then heads down to -1.

Cosine is just like Sine, but it starts at 1 and heads down until π radians and then heads up again.

The Tangent function has a completely different shape; it goes between negative and positive Infinity, crossing through 0 (every π radians).