some remember point in this question
Sin60°=√3/2
cos30°=√3/2
sin30°=1/2
cos60° =1/2
solution :- Sin60° cos30° - sin30° cos60°
=(√3/2).(√3/2)-(1/2).(1/2)
=(3/4)-(1/4)
=1/2 ans...
prove that (1-sinA+cosA)^2 =2(1+cosA)(1-sinA)
prove that (1+sinA+cosA)^2 =2(1+sinA)(1+cosA)
