5. `cos^(2)(125^(0)-x)-cos^(2)(55^(0)+x)`= `(1) -1` `(2) 0` `(3) 1` `(4) 2`

(cos^(2)1^(0)-cos^(2)2^(0))/(2sin3^(0)*sin1^(0)) is equal to

cos24^(@)+cos55^(@)+cos125^(@)+cos204^(@)=1)-1quad 2)0 33)14)2

6cos^(3)x+cos^(2)x-1=0

cos5^(0)+cos24^(0)+cos175^(0)+cos204^(0)+cos300^(@)= 1) (1)/(2) 2) 13)(3)/(2)4)2

Value of (1-(cos61^(0))/(cos1^(0)))*(1-(cos62^(0))/(cos2^(0)))*(1-(cos63^(0))/(cos3^(0)))*(1-(cos119^(@))/(cos59^(@)))(1-1(b)1(c)2(d)-2

lim_ (x rarr0) (cos ^ (2) ((1-cos ^ (2)) (1-cos ^ (2) (... * cos ^ (2) (x)))))) / (sin [ pi ((sqrt (x + 4) -2) / (x))])

Let x=sin1^(0), then the value of the expression.(1)/(cos0^(0)cos1^(0))+(1)/(cos1^(0)cos2^(0))+(1)/(cos2^(0)cos3)+(1)/(cos44^(0)cos45^(@)) is equal to (a) x (b) (1)/(x) (c) (sqrt(2))/(x) (d) (x)/(sqrt(2))

If quad cos^(-1)(2x)+2cos^(-1)sqrt(1-4x^(2)),-(1)/(2)

Statement-1: The domain of definition of the function f(x)=e^(2x)+cos^(-1)((x)/(2)-1) , is (0,1) cup (1,2) cup (2,3) cup (3,4) Statement:- The domain of cos^(-1)""((x)/(2)-1) is [0,4] .