Datrys sin101/a=sin31/39

$$\frac { \sin 101 } { a } = \frac { \sin 31 } { 39 }$$

Datrys ar gyfer a

$$a = \frac{63805766924098160}{858396791516757} = 74\frac{284404351858142}{858396791516757} \approx 74.331320381$$

Camau ar gyfer Datrys Hafaliad Llinol

Evaluate trigonometric functions in the problem

$$\frac{0.981627183447664}{a} = \frac{0.5150380749100542}{39}$$

All y newidyn a ddim fod yn hafal i 0 gan nad ydy rhannu â sero wedi’i ddiffinio. Lluoswch ddwy ochr yr hafaliad wrth 39a, lluoswm cyffredin lleiaf a,39.

$$39\times 0.981627183447664=a\times 0.5150380749100542$$

Lluosi 39 a 0.981627183447664 i gael 38.283460154458896.

$$38.283460154458896=a\times 0.5150380749100542$$

Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.

$$a\times 0.5150380749100542=38.283460154458896$$

Rhannu’r ddwy ochr â 0.5150380749100542.

$$a=\frac{38.283460154458896}{0.5150380749100542}$$

Ehangu \frac{38.283460154458896}{0.5150380749100542} drwy luosi'r rhifiadur a'r enwadur gyda 10000000000000000.

$$a=\frac{382834601544588960}{5150380749100542}$$

Lleihau'r ffracsiwn \frac{382834601544588960}{5150380749100542} i'r graddau lleiaf posib drwy dynnu a chanslo allan 6.

$$a=\frac{63805766924098160}{858396791516757}$$