In any given triangle prove that...
where
find, if
the answer is...
not sure how they got this...
Hello bigwaveA few preliminary results:(1)Then, starting with the LHS:
(2)
Using the Sine Rule: (3)
I agree with the numerical answer given. This is a straightforward use of a calculator, using the result we've just proved. Is there a problem with this?using (1)
using (2)
using (3)
Grandad