Double Angle 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 identity correctly expresses sin(2θ)?
📘 Worked solution
✓The double angle identity for sine comes from the sum identity with A=B=θ: sin(2θ)=2sin(θ)cos(θ).
And one from the hard end
State the double angle identity for tangent: tan(2θ).
Solution shown after you try it in practice mode.
Work through all 10, easiest to hardest
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