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1.8.1 Trigonometric definitions, rules and radians

On the unit circle, which coordinate gives cos⁡θ\cos\thetacosθ?

A

The sine rule.

B

For θ\thetaθ in radians, sector area is A=12r2θ\boxed{A=\dfrac{1}{2}r^2\theta}A=21​r2θ​.

C

sin⁡θ>0\sin\theta>0sinθ>0 and cos⁡θ<0\cos\theta<0cosθ<0.

D

The horizontal coordinate.

1.8.1 Trigonometric definitions, rules and radians Flashcards

  1. A Level
  2. /Maths
  3. /1.8.1 Trigonometric definitions, rules and radians

Flashcards for AQA A Level Maths 1.8.1 Trigonometric definitions, rules and radians, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 25 cards, matched to the AQA A Level Maths (7357) 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.