" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
sin (a+b) = sin a . cos b + cos a . sin b
sin (45+60) = sin 45. cos 60 + cos 45 . sin 60
=
=
:)
sin 105 = sin(45+60)
sin (45+60) = sin 45 cos 60 + cos 45 sin 60
= 1/2 √2 . 1/2 + 1/2√2 . 1/2√3
= 1/4 √2 + 1/4 √6
= 1/4 (√2 + √6)