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3.4.8 Trigonometry (A-level only)

In a right-angled triangle, [...]\text{[...]}[...], cos⁡θ=adjacenthypotenuse\cos\theta=\frac{\text{adjacent}}{\text{hypotenuse}}cosθ=hypotenuseadjacent​ and tan⁡θ=oppositeadjacent\tan\theta=\frac{\text{opposite}}{\text{adjacent}}tanθ=adjacentopposite​.

A

Upwards from a horizontal line.

B

248∘248^\circ248∘

C

It produces a horizontal phase shift.

D

In a right-angled triangle, sin⁡θ=oppositehypotenuse\boxed{\sin\theta=\frac{\text{opposite}}{\text{hypotenuse}}}sinθ=hypotenuseopposite​​, cos⁡θ=adjacenthypotenuse\cos\theta=\frac{\text{adjacent}}{\text{hypotenuse}}cosθ=hypotenuseadjacent​ and tan⁡θ=oppositeadjacent\tan\theta=\frac{\text{opposite}}{\text{adjacent}}tanθ=adjacentopposite​.

3.4.8 Trigonometry (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /3.4.8 Trigonometry (A-level only)

Flashcards for CCEA A Level Maths 3.4.8 Trigonometry (A-level only), covering the key formulae, methods and definitions you need to recall for AS 1, AS 2, A2 1 and A2 2. 23 cards, matched to the CCEA A Level Maths (2210) 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.