Which calculator mode is required when angles are measured in radians?
Use radian mode.
x≈116.6∘x\approx116.6^\circx≈116.6∘ or x≈296.6∘x\approx296.6^\circx≈296.6∘.
The exact value of cos30∘\cos 30^\circcos30∘ is 32\boxed{\frac{\sqrt3}{2}}23.
360∘360^\circ360∘ is excluded.
Flashcards for WJEC A Level Maths 1.5.5 Trigonometry, covering the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4. 25 cards, matched to the WJEC A Level Maths (1300QS) 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.
