# data[].attributes.body
First start with the left side

Second substitute tanx = sinx over cosx

Then multiply both the numerator and denominator by cosx.

Finally we can rewrite it

To get the left side equal to the right side

# data[].attributes.body
Start with the left side

Express sin2x using the sine addition formula

Then Express cos2x using the cosine addition formula

Substitute sin2x and cos2x into the left side

Simplify the denominator

Ues the second power of sinx plus the second power of cosx to equal 1

Substituting back into the expression

Simplifying common factors: Two in the numerator and denominator.

Simplifying common factors: The cosx in the numerator and denominator.

And finally, tanx is equal to sinx over cosx

To get the left side is equal to the right side