vectors:

Problem 1 Vector A = -5i + 4j. Vector B = -8i - 6j. %3D %3D a) Find the dot product A B. Give your answer to 2 significant figures. b) Using your result from (a) for the dot product, find the smaller angle between A and B. Give your answer to 3 significant figures. Do not use polar coordinates to solve this problem. Of course, you may check your answer with polar coordinates if you want to. Please upload file that has your initials in the file name. For example, if your initials are FDR, the name your file "Week2QuizProb1_FDR.pdf". Upload Choose a File Question 2

Please help with physics hw (see image, there are two parts to this problem)

Question 2 Given the vectors: A 10 + 5ŷ B = -2â + 7ŷ C = 4 + 6ŷ D = 3A + B – c How do we write vector D in polar notation? Note that this vectors C and D are different to the previous question. Hint: Write out D in unit vector notation, and then use the components of D to solve for magnitude of D and the angle.

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need assistance with this problem a-c

M PRACH Consider the three displacement vectors A = (4î - 3ĵ) m, B = (61 - 7ĵ) m, and C = (-8î + 5ĵ) m. Use the component method to determine the following. (Take the +x direction to be to the right.) (a) the magnitude and direction of the vector D = A + B + C X magnitude Note that all three vectors lie in the xy plane so the sum of these vectors will also lie in the xy plane. m X The angle you give does not put the sum into the correct quadrant.° counterclockwise from the +x axis direction (b) the magnitude and direction of E= -A-B+C magnitude m direction counterclockwise from the +x axis

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M Hello, i need help understanding how do you find the sin and cosine of E1 x and y along with E2 x and y. This problem is complete that im showing here please explain with this problem how you got the sin and cosine to start the problem for vector addition!!!