Answers

2015-06-13T07:37:23+05:30
(i) sin 60° cos 30° + sin 30° cos 60°
= Root 3/ 2*1/2 + 
1/2*Root 3/ 2
= Root 3/4 + Root 3/4
= Root 3/2

(ii) 2 tan2 45° + cos2 30° – sin2 60°
= 2*1*1 + (
Root 3/ 2)*(Root 3/ 2) - (Root 3/ 2)*(Root 3/ 2)
= 2
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