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3.6 E: Trigonometry

 
Content
E1

Understand and use the definitions of sine, cosine and tangent for all arguments; the sine and cosine rules; the area of a triangle in the form

12absin⁡C

 
Content
E3

Understand and use the sine, cosine and tangent functions; their graphs, symmetries and periodicity.

 
Content
E5

Understand and use

tan⁡θ≡sin⁡θcos⁡θ

Understand and use

sin2⁡θ+cos2⁡θ≡1

 
Content
E7

Solve simple trigonometric equations in a given interval, including quadratic equations in sin, cos and tan and equations involving multiples of the unknown angle.