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1.5.6 Graphs of basic trigonometric functions

What value does y=sin⁡θy=\sin\thetay=sinθ have at θ=0∘\theta=0^\circθ=0∘?

A

sin⁡0∘=0\sin 0^\circ=\mathbf{0}sin0∘=0.

B

The reference angle gives the size; the quadrant gives the sign.

C

cos⁡30∘=\cos30^\circ=cos30∘= 32\boxed{\frac{\sqrt3}{2}}23​​​, cos⁡45∘=\cos45^\circ=cos45∘= 22\frac{\sqrt2}{2}22​​, and cos⁡60∘=\cos60^\circ=cos60∘= 12\frac1221​.

D

12\frac1221​, since 750∘−720∘=30∘750^\circ-720^\circ=30^\circ750∘−720∘=30∘.

1.5.6 Graphs of basic trigonometric functions Flashcards

  1. A Level
  2. /Maths
  3. /1.5.6 Graphs of basic trigonometric functions

Flashcards for OCR A Level Maths 1.5.6 Graphs of basic trigonometric functions, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 25 cards, matched to the OCR A Level Maths (H240) 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.