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[" 21.मान जात कीजिए "],[" (i) "(4(sin^(2...

[" 21.मान जात कीजिए "],[" (i) "(4(sin^(2)60^(@)-cos^(2)45^(@)))/(tan^(2)30^(@)+cos^(2)90^(@))]

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(4(sin^(2)60^(@)+cos^(2)60^(@)))/(tan^(2)45^(@)-cos^(2)90^(@)+sin90^(@))

Find the value of (4sin^(2)60^(@)-cos^(2)45^(@))/(tan^(2)30^(@)+sin^(2)0^(@))

(5cos^(6)60^(@)+4sec^(2)30^(@)-tan^(2)45^(@))/(sin^(2)30^(@)+cos^(2)30^(@))

sin^(2) 60^(@) + 2 tan 45^(@) - cos^(2) 30^(@)

(5sin^(2)30^(@)+cos^(2)45^(@)-4tan^(2)30^(@))/(2sin30^(@).cos30^(@)+tan45^(@))=?

Prove that : 4(sin^(4)30^(@)+cos^(4)60^(@))-3(cos^(2)45^(@)-sin^(2)90^(@))=2

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(5cos^(2)60+4sec^(2)30-tan^(2)45)/(sin^(2)30+cos^(2)30)

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Find the value of (sin30^(@))/(cos^(2)45^(@))-tan^(2)60^(@)+3cos90^(@)+sin0^(@) .