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AddMath - Trigonometry Function - Solving double angle question 

Y=mx+c
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30 окт 2024

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Комментарии : 20   
@azizahkasim5267
@azizahkasim5267 5 лет назад
Ommmmmggg !! You're indeed a gift to this world !! Thank you teacher 🙇🙇
@mathew_pang
@mathew_pang 5 лет назад
thanks Azizah! =P
@ainincinnamonrolls
@ainincinnamonrolls 5 лет назад
Very2 useful, last minute spm studying ringht now and i find this very helpful. Thank you 😃
@kausalyaasubramaniam4475
@kausalyaasubramaniam4475 3 года назад
Hye sir. Could you pls do videos for basic of addition formula and double angle formula?
@juandelacruz9027
@juandelacruz9027 2 года назад
you have to solve it step by step going downwards ang pagsusulat para hindi nakakalito. do not go for shortcuts. You need to reinstate yung identities na ginamit mo kung bakit nagbago yung double angle papunta sa single angle. Huwag yung patalun-talun....pababa ang sulat step by step bagalan mo lang. Remember hindi lahat ng tao ganun kabilis pumick up sa Math. I watch videos ni PreMath...cya dahan dahan lang mag explain. Do that.
@zhonghuawansui
@zhonghuawansui Год назад
2 (sin^2)A + 2sinAcosA / 2 cos^2 A = 2(sin^2 A + sinAcosA) / 2 cos^2 A , then simplify the 2, become sin^2 A / cos^2 A + sinAcosA/cos^2 A = tan^2 A + tan A=6
@claireli88
@claireli88 5 лет назад
Another method is to use R-formula for sin(2theta) - 7cos(2theta) = 5 gives you sqrt(50)sin(2theta -alpha) =5 where alpha = inverse tan(7).
@mathew_pang
@mathew_pang 5 лет назад
Thanks for sharing 👍🏼
@neerashinimelisa9620
@neerashinimelisa9620 5 лет назад
What is R-formula? I'm sorry I don't understand
@nandaprian
@nandaprian 5 лет назад
I tried it but it didn't work
@mathmathician8250
@mathmathician8250 5 лет назад
I used (sin(2α))^2+(cos(2α))^2 = 1 to solve the equation. I don't know why but it doesn't work
@kangah5998
@kangah5998 5 лет назад
More modern maths video pleaseeeeeee
@Teedies-oh7gi
@Teedies-oh7gi 4 года назад
Woah how do you come up with that two formula I don't get it
@jellyfishrr5232
@jellyfishrr5232 5 лет назад
Make more Amath videos plsssss!
@leongmunhin2470
@leongmunhin2470 3 года назад
u divide cos^2theta throughout arent u losing solutions
@priyahema41
@priyahema41 Год назад
encik kata nak explain yg 2sin teta cos teta per cos² teta equal 7 cos² teta per cos² teta -7sin² teta per cos² teta + 5 per cos² teta.????takde explain pun😢
@priyahema41
@priyahema41 Год назад
kita punya presentation puan tanya banyak soalan kita xdpt jawab sbb encik x explain😢
@mathew_pang
@mathew_pang Год назад
can u send the question to our discord or telegram?
@nandaprian
@nandaprian 5 лет назад
I got the answer...but I have 8 angles...4 is correct and 4 is not correct...how ?😂😂
@wjgoh5161
@wjgoh5161 5 лет назад
nanda prian add sugar to coffee😃
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