Calculator wich uses trigonometric formula to simplify trigonometric expression.

This calculator allows through various trigonometric formula to calculate trigonometric expression. Trignometric expressions are expressions that involve sine functions, cosine functions , tangent function ...

Simplify a trigonometric expression

To simplify trigonometric expressions, the calculator uses various formulas of trigonometry, here are some examples of formulas trigonometric used by the calculator:

`AA x in RR, k in ZZ`,

• `sin(-x)= -sin(x)`
• `sin(x+2*k*pi)=sin(x)`
• `sin(pi-x)=sin(x)`
• `sin(pi+x)=-sin(x)`
• `sin(pi/2-x)=cos(x)`
• `sin(pi/2+x)=cos(x)`

• `cos(-x)= cos(x)`
• `cos(x+2*k*pi)=cos(x)`
• `cos(pi-x)=-cos(x)`
• `cos(pi+x)=-cos(x)`
• `cos(pi/2-x)=sin(x)`
• `cos(pi/2+x)=-sin(x)`

• `tan(-x)= -tan(x)`
• `tan(x+k*pi)=tan(x)`
• `tan(pi-x)=-tan(x)`
• `tan(pi+x)=tan(x)`
• `tan(pi/2-x)=1/tan(x)`
• `tan(pi/2+x)=-1/tan(x)`

This is only a small example of the many trigonometric formulas used by this trigonometric calculator.

When the calculator simplifies a trigonometric expression, it indicate the formulas used to arrive at the result, in the section reserved for the detail of the calculations.

To simplify a trigonometric expression, enter the expression to simplify and apply the simplify_trig function. Thus, for the simplification of the following expression `cos(x+pi)+2*sin(x)`, enter simplify_trig(`cos(x+pi)+2*sin(x)`) , after calculation the simplified form of the trigonometric expression is returned.

This other example shows how to calculate the trigonometric expression `cos(pi-x)`: simplify_trig(`cos(pi-x)`) .

The trigonometric calculator can simplify alphanumeric expressions but also purely numerical expressions.

Syntax :

simplify_trig(expression), where expression represents the trigonometric expression to be simplified.

Examples :

simplify_trig(`cos(x+pi)`) returns `-cos(x)`