12) Find the value of value of sin309.cos60°+cos30.sin60° – InterviewSolution

1.

12) Find the value of value of sin309.cos60°+cos30.sin60°

Answer»

sin30cos60 + cos30sin60= (1/2)(1/2)+(V3/2)(V3/2) =1/4+3/4=1+3/4=4/4=1

sin 30=1/2cos 60=1/2cos 30=/3/2cos 60=/3/2sin30cos60+cos30sin60=1/4+3/4 =4/4 =1

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