Practice Flashcards: Higher Maths: trigonometry | Zestly

Question 1

Radians to degrees conversion

Accepted Answer

Multiply by $\frac{180}{\pi}$. Example: $\frac{\pi}{2} 	ext{ rad} = \frac{\pi}{2} \cdot \frac{180}{\pi} = 90^\circ$.

Question 2

Degrees to radians conversion

Accepted Answer

Multiply by $\frac{\pi}{180}$. Example: $180^\circ = 180 \cdot \frac{\pi}{180} = \pi 	ext{ rad}$.

Question 3

Pythagorean identity

Accepted Answer

$\sin^2 x + \cos^2 x = 1$. Example: If $\sin x = 0.6$, then $\cos^2 x = 1 - 0.36 = 0.64$.

Question 4

Sine compound angle

Question 5

Cosine compound angle

Question 6

Sine double angle

Question 7

Cosine double angle

Question 8

Wave function $k\cos(x-a)$

Question 9

Tangent identity

Question 10

Period of $\sin(nx)$

Question 11

Exact value $\sin 30^\circ$

Question 12

Exact value $\cos 60^\circ$