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[" 4.Prove that: "],[" (i) "2(cos^(2)45^...

[" 4.Prove that: "],[" (i) "2(cos^(2)45^(@)+tan^(2)60^(@))-6(sin^(2)45^(@)-tan^(2)30^(@))=6]

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Show that : 2tan^(2)60^(@)-6(sin^(2)45^(@)-tan^(2)30^(@))=5

Show that : 2tan^(2)60^(@)-6(sin^(2)45^(@)-tan^(2)30^(@))=5

4sin^(2)60^(@)+3tan^(2)30^(@)-8sin45^(@)*cos45^(@)

Prove that : (2tan^(2)30^(@))/(1-tan^(2)30^(@))+sec^(2)45^(@)-cot^(2)45^(@)=sec60^(@) .

Show that :- 2[cos^2 45^@+tan^2 60^@]-6[sin^2 45^@-tan^2 30^@]=6 .

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

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

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

If x sin45^(@)cos^(2)(60^(@))=(tan^(2)(60^(@))cos es0^(@))/(sec45^(@)cot^(2)(30^(@)))