Vector s makes angle of 45 degree with x-axis and 60

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Vector r makes angle of 30 degree with x- axis, and 70 degree with y-axis,and it is in the positive octant. Vector s makes angle of 45 degree with x-axis , and 60 degree with y-axis , and it is also in the positive octant. What is the angle between r and s?

Reference no: EM13625060

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