Question: Hi, can someone help me with this please. Let E1, 11'; be orthonormal vectors in R2. Please justify your answers to all questions. (a) (4

Hi, can someone help me with this please.

Hi, can someone help me with this please. Let "E1, 11'; be

Let "E1, 11'; be orthonormal vectors in R2. Please justify your answers to all questions. (a) (4 points] What is the length of 411'] + 17;? (b) (4 points] What is the angle between 4131 + {2 and 3171 + 5113'? (c) (4 points] What is the area of the parallelogram with sides 42171 + 2172 and 311'] + 5112

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