Pythagorean and Basic Trigonometric Identities
10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.
Sample: the first question, solved
Which equation is the primary Pythagorean identity?
📘 Worked solution
✓It comes directly from the unit circle definition of sine and cosine: sin²(θ)+cos²(θ)=1.
And one from the hard end
Derive 1+cot²(θ)=csc²(θ) from the primary identity.
Solution shown after you try it in practice mode.
Work through all 10, easiest to hardest
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