`((-4)/(6))-((3)/(4))`

Prove tan((11pi)/(3))-2sin((4pi)/(6))-((3)/(4))cosec^(2)((pi)/(4))+4cos^(2)((17pi)/(6)) = (3-4sqrt(3))/(2)

Simplify: (-4(5)/(6))+(-7(3)/(4))

(1)/(2)+(-(3)/(4))+(5)/(6)=(-(3)/(4))+(1)/(2)+...

Assertion (A) : (3^2)/(2!) +(3^4)/(4!)+(3^6)/(4!)+ .... = Cosh 3 -1 Reason (R) : Cosh x =1 +(x^2)/(2!) +x^4/(4!) + .....

Simplify the following using laws of exponent ((-4) ^(6))/ ( - 4) ^(3)

(tan) (11 pi) / (3) (- 2sin) (4 pi) / (6) - (3) / (4) (cos ec ^ (2)) (pi) / (4) + (4cos ^ (2)) (17 pi) / (6) = (3-4sqrt (3)) / (2)

Find the sum of -4 (5)/(6) and -7 (3)/(4) .

Sum the series (1)/(4)+(1.3)/(4.6)+(1.3.5)/(4.6.8)+.... to n terms and to infinity.