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Fae Johnson

Asked in A-Level Maths - Trigonometry

Use the addition formula to prove the factor formula for SIN A + SIN B.

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Maurine Gorczany

Asked in A-Level Maths - Trigonometry

Finish the RHS of the factor formula COS A + COS B = ........ ?

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Heloise Willms

Asked in A-Level Maths - Trigonometry

Finish the RHS of the factor formula SIN A + SIN B = ......... ?

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Donato Runolfsson

Asked in A-Level Maths - Trigonometry

What is the R formula in terms of cos ?

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Romaine Turner

Asked in A-Level Maths - Trigonometry

What is the R formula in terms of sin ?

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