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Evaluate the following (i) sin 60^@...

Evaluate the following (i) `sin 60^@ cos30^@ + sin 30^@ cos 60^@` (ii) `2tan^2 45^@ + cos^2 30^@ - sin^2 60^@` (iii) `(cos45^@)/(sec30^@ + c o s e c 30^@)` (iv) `(sin30^@ + tan45^@ - c o s e c 60^@ )/(sec30^@ + cos60^@ +cot45^@)` (v) `(5cos^2 60^@ + 4sec^2 30^@ - tan^2 45^@ )/ (sin^2 30^@ + cos^2 30^@ ) `

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