If `cos28^o +sin28^o =k^3`,then `cos17^o `is equal

If cos28^0+sin28^0=k^3, t h e ncos17^0 is equal to

If cos28^0+sin28^0=k^3, t h e ncos17^0 is equal to (a) (k^3)/(sqrt(2)) (b) -(k^3)/(sqrt(2)) (c) +-(k^3)/(sqrt(2)) (d) none of these

If cos28^0+sin28^0=k^3, t h e ncos17^0 is equal to (k^3)/(sqrt(2)) (b) -(k^3)/(sqrt(2)) (c) +-(k^3)/(sqrt(2)) (d) none of these

If cos28^0+sin28^0=k^3, t h e ncos17^0 is equal to (a) (k^3)/(sqrt(2)) (b) -(k^3)/(sqrt(2)) (c) +-(k^3)/(sqrt(2)) (d) none of these

If cos28^(0)+sin28^(0)=k^(3), thencos 17^(0) is equal to (a) (k^(3))/(sqrt(2))(b)-(k^(3))/(sqrt(2))(c)+-(k^(3))/(sqrt(2))(d) none of

If cos 28^(@)+sin 28^(@)=k^(3) , then cos17^(@) equal to

If cos 28^(@) + sin 28^(@) = k^(3), then cos 17^(@) is equal to

cos62^@/(sin28^@)=?

The value of cos1^o.cos2 ^o.cos3^o.....cos179^o is equal to