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निम्नलिखित के मान ज्ञात कीजिए: (i) 2ta...

निम्नलिखित के मान ज्ञात कीजिए:
`(i) 2tan^(2)45^(@)+cos^(2)30^(@)-sin60^(@)`
(ii) `(cos45^(@))/(sec30^(@)-cosec30^(@))`
(iii)`(sin30^(@)+tan45^(@)-cosec60^(@))/(sec30^(@)+cos60^(@)+cot45^(@))`
(iv)`sin60^(@)cos30^(@)+sin30^(@)cos60^(@)`
(v) `(5cos^(2)60^(@)+4sec^(2)30^(@)-tan^(2)45^(@))/(sin^(2)30^(@)+cos^(2)30^(@))`

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