Skip to content

Course home

Sign up

Card 1 of 21

The notation sin⁡2θ\sin^2\thetasin2θ means [...]\text{[...]}[...], not sin⁡(θ2)\sin(\theta^2)sin(θ2).

A

Division by zero is undefined.

B

It is true for every angle where both sides are defined.

C

(1−sin⁡θ)(1+sin⁡θ)=1−sin⁡2θ=cos⁡2θ(1-\sin\theta)(1+\sin\theta)=1-\sin^2\theta=\cos^2\theta(1−sinθ)(1+sinθ)=1−sin2θ=cos2θ

D

The notation sin⁡2θ\sin^2\thetasin2θ means (sin⁡θ)2\boxed{(\sin\theta)^2}(sinθ)2​, not sin⁡(θ2)\sin(\theta^2)sin(θ2).

Card 1 of 21

1.7.8 Identity sin^2 + cos^2 = 1 Flashcards

  1. A Level
  2. /Maths
  3. /1.7.8 Identity sin^2 + cos^2 = 1

21 flashcards on OCR (MEI) A Level Maths 1.7.8 Identity sin^2 + cos^2 = 1: the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.

Flashcards