Sin Cos Tan Chart. Though we can find the values of cos, sin, and tan using the calculator, there is a chart with some standard angles 0 o, 30 o, 45 o, 60 o, and 90 o. Tips to remember sin cos tan table: The things that you need to memorize from this chart are: The angles 0 o, 30 o, 45 o, 60 o, and 90 o in order. Cosine is just like Sine, but it starts at 1 and heads down until π radians (180°) and then heads up again. Plot of Sine and Cosine In fact Sine and Cosine are like good friends: they follow each other, exactly π /2 radians (90°) apart. Plot of the Tangent Function.
A sine wave made by a circle:
A sine wave produced naturally by a bouncing spring:
Plot of Sine
The Sine Function has this beautiful up-down curve (which repeats every 2π radians, or 360°).
It starts at 0, heads up to 1 by π/2 radians (90°) and then heads down to −1.
Plot of Cosine
Cosine is just like Sine, but it starts at 1 and heads down until π radians (180°) and then heads up again.
Plot of Sine and Cosine
Sin Cos Tan Table
In fact Sine and Cosine are like good friends: they follow each other, exactly π/2 radians (90°) apart.
Plot of the Tangent Function
The Tangent function has a completely different shape ... it goes between negative and positive Infinity, crossing through 0, and at every π radians (180°), as shown on this plot.
At π/2 radians (90°), and at −π/2 (−90°), 3π/2 (270°), etc, the function is officially undefined, because it could be positive Infinity or negative Infinity.
Inverse Sine, Cosine and Tangent
The Inverse Sine, Cosine and Tangent graphs are:
Inverse Sine
Inverse Cosine
Inverse Tangent
Mirror Images
Here is Cosine and Inverse Cosine plotted on the same graph:
Cosine and Inverse Cosine
They are mirror images (about the diagonal)!
Sin Cos Tan Formulas
The same is true for Sine and Inverse Sine and for Tangent and Inverse Tangent. Can you see this in the graphs above?