devious trig proof question | Revision Server | Page 1

severe jay Sep 14, 2023, 6:23 PM

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can’t figure this out for the life of me

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<@&791435371564892232>

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made a bit of a start but idk

lilac shore Sep 14, 2023, 6:37 PM

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yeah

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Well

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the top thing gives u a clue

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u have cosx - sinx on top

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And u need a cosx + sinx

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u cannot change the value

severe jay Sep 14, 2023, 6:38 PM

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lilac shore And u need a cosx + sinx

so the bottom has to be this squared right

lilac shore Sep 14, 2023, 6:38 PM

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yeah exactly

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multiply whole frac thru by cosx + sinx/ cosx + sinx

severe jay Sep 14, 2023, 6:38 PM

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OH MY GOSH

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THANK YOU SO MUCHHH

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AND THEN I CAN USE AN IDENTITU RIGHT

lilac shore Sep 14, 2023, 6:39 PM

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Yep exactly 😍😍😍😍

severe jay Sep 14, 2023, 6:39 PM

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LOVE MATHS WHEN I GET IT 😩😩

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THANKYOUUUU ANGELLL

lilac shore Sep 14, 2023, 6:39 PM

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😏😏😏 maths is great

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GOOD LUCK GIRL

#devious trig proof question