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1.7.21 Use identities to solve equations (A-level only)

What is the first goal when using an identity to solve a trigonometric equation?

A

When cos⁡x=0\cos x=0cosx=0.

B

Rewrite it using one trigonometric function or a factorised form.

C

When sin⁡x=0\sin x=0sinx=0.

D

Rcos⁡α=aR\cos\alpha=aRcosα=a and Rsin⁡α=bR\sin\alpha=bRsinα=b.

1.7.21 Use identities to solve equations (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /1.7.21 Use identities to solve equations (A-level only)

Flashcards for OCR (MEI) A Level Maths 1.7.21 Use identities to solve equations (A-level only), covering the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03. 21 cards, matched to the OCR (MEI) A Level Maths (H640) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.