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1.5.8 Reciprocal and inverse trigonometric ratios (A-level only)

The reciprocal of cosine is [...]\text{[...]}[...].

A

The reciprocal of cosine is sec⁡θ=1cos⁡θ\boxed{\sec\theta=\frac{1}{\cos\theta}}secθ=cosθ1​​.

B

θ=kπ\theta=k\piθ=kπ, where k∈Zk\in\mathbb{Z}k∈Z.

C

The reciprocal of sine is csc⁡θ=1sin⁡θ\boxed{\csc\theta=\frac{1}{\sin\theta}}cscθ=sinθ1​​.

D

−π2<arctan⁡x<π2-\frac{\pi}{2}<\arctan x<\frac{\pi}{2}−2π​<arctanx<2π​.

1.5.8 Reciprocal and inverse trigonometric ratios (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /1.5.8 Reciprocal and inverse trigonometric ratios (A-level only)

Flashcards for OCR A Level Maths 1.5.8 Reciprocal and inverse trigonometric ratios (A-level only), covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 21 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.