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Vectors have magnitude and direction and are represented with notations like arrows. They can be added and subtracted using the parallelogram method or polygon method, where the tail of the first vector is placed at the head of the second to form a parallelogram or polygon. The addition or subtraction of vectors results in a single vector representing the sum or difference.
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- 1. Vectors Audrey Pramesti and Hanna Tamba
- 2. Properties ➔ Has magnitude and direction ➔ Notation of vectors ā -ā 2ā A B
- 3. Addition and Subtraction of Vectors 1. Parallelogram Method 2. Polygon method ā ē becomes ā+ē ā ē becomes ā+ē
- 4. ➔ PA=CB because PA//CB ➔ CB=a, CD=b, so CP= a+b ➔ PA=EF= a ➔ CP=DE= a+b ➔ FD=FE+ED= (-a) + (-a-b) = -2a - b Titik P adalah titik pusat segi enam beraturan ABC.DEF. JIka PA=a dan CD=b, maka FD=? E D CF BA P Answer: - 2a - b
- 5. OP = OA + AP = OA + 1/3 AB = OA + 1/3 (AO + OB) = a + 1/3 (-a + b) = a - 1/3 a + 1/3 b = 2/3 a + 1/3 b Diketahui persegi panjang OABC dan D titik tengah OA, CD memotong diagonal AB di P. jika OA = A dan OB = B maka OP dapat dinyatakan sebagai...