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secondary 4 | A Maths
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Date Posted: 3 years ago
Views: 247
Answer provided is wrong, look at my comments for clarification.
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Treat y root x as one entity
Date Posted:
3 years ago
You can’t use tan θ =4/3.
Look at your triangles;
(4,3) is with reference to origin, not x -axis so it’s not 4 units Y and 3 units X.
Even if you use P, it’s not 4 units Y it’s 4+Y Coordinate of P.
You rearrange the equation you’d get 3 as your “M” or gradient.
Remember that tan θ = gradient because;
tan θ = opposite/adjacent
therefore, tan θ = y/x in this case.
Hence tan θ = 3.
Look at your triangles;
(4,3) is with reference to origin, not x -axis so it’s not 4 units Y and 3 units X.
Even if you use P, it’s not 4 units Y it’s 4+Y Coordinate of P.
You rearrange the equation you’d get 3 as your “M” or gradient.
Remember that tan θ = gradient because;
tan θ = opposite/adjacent
therefore, tan θ = y/x in this case.
Hence tan θ = 3.
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