simplify sin(180)-x

Solution

simplify

sin (18 0^{\circ}) - x

- x

Solution steps

sin (18 0^{\circ}) - x

Use the following trivial identity:

sin (18 0^{\circ}) = 0

sin (x)

periodicity table with

36 0^{\circ} n

cycle:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= 0 - x

0 - x = - x

= - x

8 x^{3} - (2 x - 3 y)^{3}

\frac{1}{cos ^{2} ( a )}

- b - 20

(\frac{2 a ^{2} - 1}{3 \cdot a ^{3}})^{2}

(\frac{a}{b})^{3} + (\frac{b}{c})^{3} + (\frac{c}{a})^{3} - 3