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Maths Trig Identities A-Level Edexcel Exam 2025/2026 Questions With Completed & Verified Solutions.

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Maths Trig Identities A-Level Edexcel Exam 2025/2026 Questions With Completed & Verified Solutions.

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Maths Trig Identities A-Level Edexcel

cos(A±B) - ANS cosAcosB∓sinAsinB
\cos2θ - ANS cos²θ-sin²θ
2cos²θ-1
1-2sin²θ
\cosA-cosB - ANS -2sin(½A+½B)×sin(½A-½B)
\cosA+cosB - ANS 2cos(½A+½B)×cos(½A-½B)
\cosAcosB - ANS ½(cos(A+B)+cos(A-B))
\cosAsinB - ANS ½(sin(A+B)-sin(A-B))
\cosecθ - ANS 1÷sinθ
\cot²θ+1 - ANS cosec²θ
\cotθ - ANS cosθ÷sinθ
1÷tanθ
\secθ - ANS 1÷cosθ
\sin(A±B) - ANS sinAcosB±cosAsinB
\sin2θ - ANS 2sinθcosθ
\sin²θ+cos²θ - ANS 1
\sinA-sinB - ANS 2cos(½A+½B)×sin(½A-½B)
\sinA+sinB - ANS 2sin(½A+½B)×cos(½A-½B)
\sinAcosB - ANS ½(sin(A+B)+sin(A-B))
\sinAsinB - ANS ½(cos(A-B)-cos(A+B))
\tan(A±B) - ANS tanA±tanB÷(1∓tanAtanB)
\tan2θ - ANS 2tanθ÷(1-tan²θ)
\tan²θ+1 - ANS sec²θ
\tanθ - ANS sinθ÷cosθ
\

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