Question

In triangle EFD, the measure of angle D is 37.9, side d is 27 ft, side f 20ft. How do you find the measure of angle F?

Answer 1

20/sin F = 27/ sin 37.9 `=>`
sin F = (20/27)sin 37.9.
use Mathematical tables to find F = `sin^ - 1` [ (20/27)sin 37.9]

Explanation:

Using the sine rule for any Triangle: a / Sin A = b / SinB = c / SinC to begin with.