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secondary 4 | A Maths
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Help Pls! Tq!
Date Posted: 7 years ago
Views: 561
a) use trig addition formula sin(2x+x)
b) sub in from part i
This should help..
b) sub in from part i
This should help..
See 1 Answer
done
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clear
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The double angle formula is a very versatile identity and can be changed easily to fit different variables. Try to solve 9b on ur own once u understood the steps to prove the identities. :)
Date Posted:
7 years ago
Try to solve 9aii on ur own i mean**
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