Hello everyone especially to my beloved teacher, Ms Joanne and my fellow friends. Welcome to My World ( ♥ Life with Advanced Function ♥ ) !! This is the first time I am creating my blog. However, it is not my personal blog, it is a blog specially for my "lovely" subject, Advanced Function XD. I will try to continue to update my blog whenever I am free. Feel free to check out my blog !! Enjoy ^^
Wednesday, 28 September 2011
4.4 Compound Angle Formulas
REMEMBER !!
The compound angle, or addition and subtraction, formulas for sine and cosine are sin (x+y) = sinx cosy + cosx sin y sin (x-y) = sinx cosy - cosx siny cos (x+y) = cosx cosy - sinx siny cos (x-y) = cosx cosy + sinx siny
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