`1/4(sqrt3cos23^@-sin23^@)` is equal to

(1)/(4)[sqrt(3)cos23^(@)-sin23^(@)]=

1/3 (sqrt3 cos 23^(@) - sin 23^(@))=

1/4 (sqrt3 cos 23^(@) - sin 23^(@))= ................ A) cos 43^(@) B) cos 7^(@) C) 1/2 cos 53^(@) D) 2/3 cos 53^(@)

The value of sin660^(@)-cos1230^(@)-(tan47^(@)tan23^(@))cos270^(@) is equal to (1)0(2)1(3)-(sqrt(3))/(2)(4)-sqrt(3)

The domain of f(x)=sqrt(sin^(-1)(3x-4x^(3)))+sqrt(cos^(-1)x) is equal to

The domain of f(x)=sqrt(sin^(-1)(3x-4x^(3)))+sqrt(cos^(-1)x) is equal to

The domain of f(x)=sqrt(sin^(-1)(3x-4x^(3)))+sqrt(cos^(-1)x) is equal to