David Tan's answer to Yos's Secondary 4 E Maths Singapore question.
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a)
https://www.mathsisfun.com/algebra/vectors-dot-product.html
b)
https://www.mathsisfun.com/algebra/trig-cosine-law.html
https://www.mathsisfun.com/algebra/vectors-dot-product.html
b)
https://www.mathsisfun.com/algebra/trig-cosine-law.html
Date Posted:
3 years ago
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