Sine formula

Today's learning is based on sine formula. I hope you like this learning.

You can also get online help for better knowledge. You get math answers free online. Following is the proved example of sine formula. Get a learning.

Let ABC be any triangle.


From (1) and (2), we get

DABC is an obtuse-angled triangle.

From (4) and (5), we get

DABC is a right-angled triangle at C.
Similarly, by drawing perpendicular from B to AC, we can prove that
Hence from (6) and (9), we get





Do post your comments.