Ratkaise sin81^circcos69^circ+sin69^circsin9^circ

$$\sin 81 ^ { \circ } \cos 69 ^ { \circ } + \sin 69 ^ { \circ } \sin 9 ^ { \circ }$$

Laske

$$0,500000000000000144669781057351599$$

Ratkaisun vaiheet

Evaluate trigonometric functions in the problem

$$0,9876883405951378 \cdot 0,3583679495453004 + 0,9335804264972017 \cdot 0,15643446504023087$$

Kerro 0,9876883405951378 ja 0,3583679495453004, niin saadaan 0,35395584540887981996023708039512.

$$0,35395584540887981996023708039512+0,9335804264972017\times 0,15643446504023087$$

Kerro 0,9335804264972017 ja 0,15643446504023087, niin saadaan 0,146044154591120324709543976956479.

$$0,35395584540887981996023708039512+0,146044154591120324709543976956479$$

Selvitä 0,500000000000000144669781057351599 laskemalla yhteen 0,35395584540887981996023708039512 ja 0,146044154591120324709543976956479.

$$0,500000000000000144669781057351599$$