Lutasin ang 4/sin(80^circ)-sin(20^circ)

$$\frac{ 4 }{ \sin ( 80 ^ { \circ } ) - \sin ( 20 ^ { \circ } ) }$$

I-evaluate

$$\frac{40000000000000000}{6427876096865393}\approx 6.222895307$$

Mga Hakbang ng Solution

Evaluate trigonometric functions in the problem

$$\frac{4}{0.984807753012208 - 0.3420201433256687}$$

I-subtract ang 0.3420201433256687 mula sa 0.984807753012208 para makuha ang 0.6427876096865393.

$$\frac{4}{0.6427876096865393}$$

I-expand ang \frac{4}{0.6427876096865393} sa pamamagitan ng pag-multiply sa parehong numerator at denominator ng 10000000000000000.

$$\frac{40000000000000000}{6427876096865393}$$

I-factor

$$\frac{2 ^ {18} \cdot 5 ^ {16}}{6427876096865393} = 6\frac{1432743418807642}{6427876096865393} = 6.222895307441649$$