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" 9."4(sin^(4)60^(@)+cos^(4)30^(@))-3(ta...

" 9."4(sin^(4)60^(@)+cos^(4)30^(@))-3(tan^(2)60^(@)-tan^(2)45^(@))+5cos^(2)45^(@)

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

Evaluate the following: 4(sin^(4)60o+cos^(4)300)-3(tan^(2)60o-tan^(2)45o)+5cos^(2)450 (ii) (cos ec^(2)45o sec^(2)30o)(sin^(2)30o+4cot^(2)45o-sec^(2)60o)

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

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

Evaluate : 4(sin^(4)30^(0)+cos^(4)60^(@))-(2)/(3)(sin^(2)60^(@)-cos^(2)45^(@))+(1)/(2)tan^(2)60^(@)

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

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

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

Evaluate the following : (5cos^(2)60^(@)+4sec^(2)30^(@)-tan^(2)45^(@))/(sin^(2)30^(@)+cos^(2)30^(@))