" (i) "3cos^(2)30^(@)+sec^(2)30^(@)+2cos^(@)+3sin90^(@)-tan^(2)60

Evaluate each of the following : 3cos^(2)30^(@)+sec^(2)30^(@)+2cos0^(@)+3sin90^(@)-tan^(2)60^(@)

Evaluate 3 cos^(2) 30^(@) +sec^(2) 30^(@) +2 cos 0^(@) + 3sin 90^(@) -tan^(2) 60^(@)

Evaluate : 3 cos^(2)60^(@)sec^(2)30^(@)-2 sin^(2)30^(@)tan^(2)60^(@)

Find the value of sin^(3)60^(@) cot 30^(@)-2 sec^(2) 45^(@)+3 cos60^(@) tan45^(@)-tan^(2)60^(@) .

Evaluate (3cos^2 30^@ + sec^2 30^@ + 2 cos 0^@ + 3 sin 90^@ - tan^2 60^@) . (A) 5frac(7)(12) (B) 7frac(5)(12) (C ) 5frac(12)(7) (D) 12frac(5)(7)

Evaluate the following expressions: 4cot^(2)45o-sec^(2)60o+sin^(2)60o+cos^(2)90o .(ii) 3cos^(2)30o+sec^(2)30o+2cos0+3sin90o-tan^(2)600

cos^(2)0^@-2cot^(2)30^(@)+3cosec^(2)90^(@)=2(sec^(2)45^(@)-tan^(2)60)

Evaluate the following expressions: (i) 4cot^2 45o-sec^2 60^o + sin^2 60^o + cos^2 90^o . (ii) 3cos^2 30^o + sec^2 30^o + 2cos0^o + 3sin90^o - tan^2 60^o

Show that (i) cos60^(@)*cos30^(@)-sin60^(@)*sin30^(@)=cos90^(@) (ii) cos60^(@)=1-2sin^(2)30^(@)=2cos^(2)30^(@)-1 (iii) (tan60^(@)-tan30^(@))/(1+tan60^(@)*tan30^(@))=tan30^(@)