0-cos^(-1)(-(1)/(sqrt(2)))

cos^(-1)((1)/(sqrt(2)))+sec^(-1)(-sqrt(2))

cos(cos1)>(1)/(sqrt(2))

cos(cos1)>(1)/(sqrt(2))

cos^(-1)(1/(sqrt(2)))+sec^(-1)(-sqrt(2))=

Find the value of 4cos[cos^(-1)((1)/(4)(sqrt(6)-sqrt(2)))-cos^(-1)((1)/(4)(sqrt(6)+sqrt(2)))] .

Find the value of 4cos[cos^(-1)((1)/(4)(sqrt(6)-sqrt(2)))-cos^(-1)((1)/(4)(sqrt(6)+sqrt(2)))] .

4sin^(3)75^(0)-3cos15^(0)= (1)/(2) (1)/(sqrt(2)) (1)/(sqrt(3)) sqrt(3)

cos2 theta-(sqrt(2)+1)(cos theta-(1)/(sqrt(2)))=0

The value of expression (2(sin1^(0)+sin2^(0)+sin3^(0)+...+sin89^(@)))/(2(cos1^(0)+cos2^(0)++cos44^(0))+1) (a) sqrt(2)(b)(1)/(sqrt(2))(c)(1)/(2)(d)0