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2(cot^(2)45^(@)+tan^(2)60^(@))-6(sin^(2)...

2(cot^(2)45^(@)+tan^(2)60^(@))-6(sin^(2)45^(@)-tan^(2)30^(@))is

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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

(kcosec^(2)30^(@).sec^(2)45)/(8cos^(2)45^(@).sin^(2)60^(@))=tan^(2)60^(@)-tan^(2)30^(@) , then k = ?

Show that: 2(cos^(2)45o+tan^(2)60o)-6(sin^(2)45o-tan^(2)30o)=6 (ii) 2(cos^(4)60o+sin^(4)30o)-(tan^(2)60o+cot^(2)45o)+3sec^(2)30o=(1)/(4)

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

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

Show that 2(cos^(4)60^(@)+sin^(4)30^(@))-(tan^(2)60^(@)+cot^(2)45^(@))+3sec^(2)30^(@)=1/4

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