sin^(2)(pi)/(6)+cos^(2)(pi)/(3)-tan^(2)(pi)/(4)

sin^(2)(pi)/(6)+cos^(2)(pi)/(3)-tan^(2)-(1)/(2)(pi)/(4)=-(1)/(2)

(sec^(2)(pi)/(4)-cot^(2)(pi)/(4))/(sin^(2)(pi)/(3)+cos^(2)(pi)/(6))+(sin^(2)(pi)/(2)-cos^(2)(pi)/(3))/((1)/(4)tan^(2)(pi)/(6))=9(2)/(3)

The value of 2sin^(2)((pi)/(3))-cos^(2)((pi)/(6))+tan^(2)(pi/6) is equal to ....

Show / Prove/ Verify the following : (sin^(2)""(pi)/(6)+cos^(2)""(pi)/(3)+tan^(2)""(pi)/(6))/(sec^(2)""(pi)/(4)-cos^(2)pi)=(1)/(3).cos""(pi)/(3)+(1)/(sqrt3)sec""(pi)/(6)

sin^(2)""(2pi)/(3)+ cos^(2)""(5pi)/6-tan^(2)""(3pi)/4=

If [[sin((pi)/(2)), cos((pi)/(3))], [2tan((pi)/(4)), 2k]] is not invertible, then k=

What is the value of expression cos^(2)((pi)/(8))+4cos^(2)((pi)/(4))-sec((pi)/(3))+5tan^(2)((pi)/(3))+sin^(2)((pi)/(8)) ?

Prove that : "sin"(pi)/(3) "tan"(pi)/(6) +"sin"(pi)/(2) "cos"(pi)/(3) =2 "sin"^(2)(pi)/(4) .

Evaluate (ii) sin^(2). (2pi)/(3) + cos^(2). (5pi)/(6) - tan^(2). (3 pi)/(4)