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footprints
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Someone pls help me prove this identity. I'm going nuts
[tex]tan^2x - sin^2x = tan^2x sin^2x[/tex]
[tex]tan^2x - sin^2x = tan^2x sin^2x[/tex]
footprints said:Oh right
So I'll get [tex]\frac{sin^2x(1-cos^2x)}{cos^2x} = \frac{sin^2x(1-cos^2x)}{cos^2x}[/tex]Right?
So its proved.
ChanDdoi said:i think that is what jai6638 meant, footprints
jai6638, you forgot that A*B / C = A/C * B and does not equal to A/C * B/C
A Trigonometry identity is an equation that is true for all values of the variables involved. It is a relationship between the trigonometric functions such as sine, cosine, tangent, etc.
Proving a Trigonometry identity helps us understand the fundamental properties and relationships between trigonometric functions. It also allows us to solve more complex trigonometric equations and problems.
The steps to proving a Trigonometry identity include simplifying both sides of the equation, converting all trigonometric functions to sine and cosine, using trigonometric identities and properties, and manipulating the equation until both sides are equal.
You can check your answer by plugging in different values for the variables into both sides of the equation and verifying that they result in the same value. You can also use a graphing calculator to graph both sides of the equation and see if they overlap.
Some common mistakes to avoid when proving a Trigonometry identity include using the wrong trigonometric identity, making careless errors while simplifying, and not showing all the steps in your solution. It is also important to double-check your work and make sure you have not made any algebraic mistakes.