Q. 1 B3.5( 78 Votes )

Evaluate the foll

Answer :

Trigonometric identities:

cos 45° = 1/√2

sec 30° = 1/cos 30° = 2/√3 [, cos 30° = √3/2]

cosec 60° = 1/sin 60° = 2/√3 [, sin 60° = √3/2]

Putting the values we get,

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