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# How to Prove in Maths

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1. In general if a question gave you an identity for example, 1 +cot2x=cosec2 x
How would you do it. Would you have to start of by saying LHS= ......
2. (Original post by Guls)
In general if a question gave you an identity for example, 1 +cot2x=cosec2 x
How would you do it. Would you have to start of by saying LHS= ......
Yep. You can start from either side. Starting from the more complicated side usually works.
Spoiler:
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Or do work from both sides.
3. (Original post by Guls)
In general if a question gave you an identity for example, 1 +cot2x=cosec2 x
How would you do it. Would you have to start of by saying LHS= ......
You picked a bad example here, because in this case, you'd start from the Pythagorean identity then get to that idenity using some manipulation, but usually, it's starting from one side and manipulating/simplifying/rewriting till you get to the other.
4. (Original post by Zacken)
You picked a bad example here, because in this case, you'd start from the Pythagorean identity then get to that idenity using some manipulation, but usually, it's starting from one side and manipulating/simplifying/rewriting till you get to the other.
You know a lot about maths wow
5. (Original post by TheYearNiner)
You know a lot about maths wow
Why do you think that?
6. (Original post by Zacken)
Why do you think that?
You answer everything do to with maths correctly
7. (Original post by TheYearNiner)
You answer everything do to with maths correctly
Not always.

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