`(5cos^2 6 0^(@)+4sec^2 3 0^(@)-tan^2 4 5^(@))/(sin^2 3 0^(@)+cos^2 3 0^(@))`

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

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

Find the value of : (5sin^(3)30^(@)+cos^(2)45^(@)-4tan^(2)30^(@))/(2sin 30^(@).cos30^(@)+tan45^(@))+cos 0^(@)

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

cos4 0^(@)+cos2 0^(@))=3(cos1 0^(@)+sin2 0^(@)) 40 CUSOUcos 40^@ + cos 20O 4(cos310^@ + sin320^@) = 3(cos 10^@ + sin20^@)N3.1 = 4

What is the value of (tan^4 60^@-sin^4 90^@ ) - 2(tan^2 45^@ +3 cos ^2 0^@)

If 4 cos ^(2) A -3 =0 and 0^(@) le A le 90 ^(@) find : tan ^(2) A+ cos ^(2) A

Prove that: (a) cos510^(@) sin510^(@) + sin(-330^(@)) cos(-390^(@))=0 b) tan(11pi)/(3) -2sin(9pi)/3-3/4"cosec"^(2)pi/4 + 4cos^(2)(17pi)/6=(3-2sqrt(3))/2

Prove that: (a) cos510^(@) sin510^(@) + sin(-330^(@)) cos(-390^(@))=0 b) tan(11pi)/(3) -2sin(9pi)/3-3/4"cosec"^(2)pi/4 + 4cos^(2)(17pi)/6=(3-2sqrt(3))/2