5 cos20° – 4 sin2 30° + 6cosec2 45° = ?

 5 cos20° – 4 sin2 30° + 6cosec2 45° = ?

 5 cos20° – 4 sin2 30° + 6cosec2 45° = ?

 5 cos20° – 4 sin2 30° + 6cosec2 45° = ?

【A】 12
【B】 8
【C】 4
【D】16

Answer – 【D】 16
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