Sin 60 cos 45 +sin 30 cos 30

sin 60 = √3/2
cos 45 = √2/2
sin 30 = 1/2
cos 30 = √3/2

sin 60.cos 45 + sin 30.cos 30
= (√3/2).(√2/2) + (1/2).(√3/2)
= (√6/4) + (√3/4)
= (√3 + √6)/4

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