Answers

2015-05-07T15:22:28+05:30
Sin 60 = root 3 /2 
cos 30 = root 3 /2 
sin 30 = 1/2 
cos 60 = 1/2 
= (root 3 /2 ) (root 3 / 2) + (1/2) (1/2) 
= 3/4 + 1/4 
= 4/4 
= 1 
sin 60 + 30 = 90 
where sin 90 = 1 
1 3 1