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

(1)/(sqrt(2)+sqrt(3))+(1)/(sqrt(3)+sqrt(4))

(cos15^(@)+sin15^(@))/(cos15^(@)-sin15^(@))=(i)1(ii)sqrt(3)(iii)(1)/(sqrt(3))(iv)2+sqrt(3)

sin^(-1)(-(sqrt(3))/(2))+cos^(-1)((sqrt(3))/(2))

The value of 6+log_((3)/(2))((1)/(3sqrt(2))sqrt(4-(1)/(3sqrt(2))sqrt(4-(1)/(3sqrt(2))sqrt(4-(1)/(3sqrt(2))...cdots))))

(1)/(2+sqrt(3))+(2)/(sqrt(5)-sqrt(3))+(1)/(2-sqrt(5))=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

sin^(-1)((sqrt(3))/(2))+2cos^(-1)((sqrt(3))/(2))

The value of sin(1/4sin^(-1)(sqrt(63))/8) is 1/(sqrt(2)) (b) 1/(sqrt(3)) (c) 1/(2sqrt(2)) (d) 1/(3sqrt(3))

The sum of the series (1)/(sqrt(1)+sqrt(2))+(1)/(sqrt(2)+sqrt(3))+(1)/(sqrt(3)+sqrt(4))+ up to 15 terms is

The integral int_(0)^( pi)sqrt(1+4sin^(2)((x)/(2))-4sin((x)/(2))dx) equal (1)pi-4(2)(2 pi)/(3)-4-4sqrt(3)(3)4sqrt(3)-4(4)4sqrt(3)-4-(pi)/(3)