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Question
secondary 3 | A Maths
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Please help
Date Posted: 3 years ago
Views: 227
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Hint:
1) change everything to sine and cosine
Ultimately
Asin(x)+Bcos(x) = C
Then use...
(A^2+B^2)^0.5 sin(x+arctan(B/A))= C
And solve X
1) change everything to sine and cosine
Ultimately
Asin(x)+Bcos(x) = C
Then use...
(A^2+B^2)^0.5 sin(x+arctan(B/A))= C
And solve X
2) do the manipulation
2Sin^2(1/2X) = 1-COS(X)
2Cos^2(1/2X) = 1+COS(X)
2Sin(X/2)COS(X/2) = Sin(X)
You will get the first question scenario and play the same trick
2Sin^2(1/2X) = 1-COS(X)
2Cos^2(1/2X) = 1+COS(X)
2Sin(X/2)COS(X/2) = Sin(X)
You will get the first question scenario and play the same trick
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