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# Maths Trig Proof Question watch

1. cosecx/cotx+tanx = cosx

Need help proving this!
2. remember cosec x is 1/sinx

cotx is cosx/sinx

tanx is sinx/cosx

3. (Original post by the bear)
remember cosec x is 1/sinx

cotx is cosx/sinx

tanx is sinx/cosx

Thanks, but i know these already. Please feel free to solve it then, because i can't
4. (Original post by the bear)
remember cosec x is 1/sinx

cotx is cosx/sinx

tanx is sinx/cosx

Don't worry I've done it, cheers
5. (Original post by frankabagnale)
Thanks, but i know these already. Please feel free to solve it then, because i can't

Now then... what does the denominator of the second fraction simplify to if you put it under a common denominator?
6. Guys I need help
7. (Original post by RDKGames)

Now then... what does the denominator of the second fraction simplify to if you put it under a common denominator?
All done, thanks though. I have a much harder one which has the class in confusion, can i send a picture of the question to you? It's difficult to write here as it involves square roots
8. (Original post by frankabagnale)
All done, thanks though. I have a much harder one which has the class in confusion, can i send a picture of the question to you? It's difficult to write here as it involves square roots
Go on then, just post a pic here.
9. TIA
Attached Images

10. (Original post by frankabagnale)
TIA

Rewrite and in terms of and respectively, employ difference of two squares, simplify.
11. (Original post by yemenia16)
Guys I need help
if you are stuck on a maths problem then you can post it on here & we will try to help
12. New proof question. If anyone can do it, please attach a full detailed picture of your answer. TIA
Attached Images

13. bump
14. (Original post by frankabagnale)
bump
Begin by using the difference of two squares twice. Express each bracket in terms of sin and cos in a single fraction. Combine.
15. (Original post by RDKGames)
Begin by using the difference of two squares twice. Express each bracket in terms of sin and cos in a single fraction. Combine.
Can you please just show me the full working out? Or at least give me some more detail.
16. (Original post by frankabagnale)
Can you please just show me the full working out? Or at least give me some more detail.
Have a go first. I don't see how my hint is insufficient.
17. (Original post by RDKGames)
Have a go first. I don't see how my hint is insufficient.
LHS or RHS ?
18. (Original post by frankabagnale)
LHS or RHS ?

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