The Student Room Group

Proof by contradiction help

I don’t understand why the mark scheme says this
Reply 1
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Original post by Anee_rk
I don’t understand why the mark scheme says this
Reply 2
Original post by Anee_rk
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Which part of the mark scheme don't you understand?
Reply 3
Original post by Notnek
Which part of the mark scheme don't you understand?


3rd last line
Reply 4
Original post by Anee_rk
3rd last line


When 0xπ2  0\leq x \leq\frac{\pi}{2} \ \ , sinx\sin x and cosx\cos x are 0\geq 0. Draw a sketch of the graphs if you're still unsure.
(edited 1 year ago)
Reply 5
Original post by Notnek
When 0xπ2  0\leq x \leq\frac{\pi}{2} \ \ , sinx\sin x and cosx\cos x are 0\geq 0. Draw a sketch of the graphs if you're still unsure.


ohh thank you that makes more sense

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