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TEACHER-GUIDE-VERIFIED · TG-V9-048

5. Find the direction angle from (2,3) to (10,9), measured above the positive x-axis.

Verified solution

Solution: tan(theta)=6/8; theta=arctan(0.75), about 36.9 degrees.

Source: Teacher Guide V9 · English V9. Match the numbers and wording in your printed question before using this solution.

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VIDEO HELP · TG-V9-048

Find a Coordinate Direction Angle (TG-V9-048)

Find the direction from (2,3) toward (10,9): opposite change 6, adjacent change 8, and arctan(6/8) approximately 36.9 degrees above the positive x-axis. Check the tangent ratio and Quadrant I direction.

Space Math Explorers · approved worked example · 1:24 · Watch on YouTube

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These pages reproduce verified solution steps for the registered V9 questions. It does not diagnose learning needs or replace instruction from a qualified teacher or tutor.