1.

(sin 30°+cos30°)-(sin60°+cos60°)

Answer» 0
=(1/2+root3/2)-(root3/2-1/2)=1/2+root3/2-root3/2-1/2=0
0
= Sin30°+ Cos30° - { Cos(90°-60)+Sin(90°-60°)}= Sin30° + Cos 30° - Cos30° - Sin30°= 0


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