Trigonometric Ratios for Any Angle (Unit Circle, Special Angles, CAST Rule)
30 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest, every one with a full worked solution. Work through all 30 with your weekly-lesson access code.
Sample: the first question, solved
What is the CAST rule used for?
📘 Worked solution
✓It shows which trig ratios (Sin, Cos, Tan, or All) are positive in each of the four quadrants.
And one from the hard end
Find the exact value of tan(315°), explaining the reference angle and sign using CAST.
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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