Q. u=(6,7)Find the direction angle of u. Enter your answer as an angle in degrees between 0∘ and 360∘ rounded to the nearest hundredth.θ=□∘
Calculate Tangent Ratio: To find the direction angle of the vectoru=(6,7), we need to calculate the angle θ that the vector makes with the positive x-axis. The direction angle can be found using the arctangent function, which is the inverse of the tangent function. The tangent of the angle is the ratio of the y-coordinate to the x-coordinate of the vector.
Find Arctangent: First, we calculate the tangent of the angle θ using the coordinates of the vector u:tan(θ)=xy=67
Calculate Angle in Degrees: Next, we find the angle θ by taking the arctangent of 67:θ=arctan(67)We will use a calculator to find the value of θ in degrees.
Check Quadrant: Using a calculator, we find that:θ≈arctan(67)≈49.3987 degrees
Round to Nearest Hundredth: Since the vector u is in the first quadrant (both x and y are positive), the direction angle θ is already between 0 and 360 degrees. Therefore, we do not need to adjust the angle further.
Round to Nearest Hundredth: Since the vector u is in the first quadrant (both x and y are positive), the direction angle θ is already between 0 and 360 degrees. Therefore, we do not need to adjust the angle further.Finally, we round the angle to the nearest hundredth as requested:θ≈49.40∘
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