`(sin19^@)/(cos71^@)+(cos73^@)/(sin17^@)`

What is the value of (sin 19^@)/(cos 71^@) + (cos 73^@)/(sin 17^@) ?

((sin49^(@))/(cos41^(@))-(cos17^(@))/(sin73^(@)))=?

Evaluate the following: (i) (sin20^@)/(cos70^@) (ii) (cos19^@)/(sin71^@)

" The value of ((sin17^(@))(cos13^(@))+(cos17^(@))(sin13^(@)))/((cos23^(@))(cos37^(@))-(sin157^(@))(sin37^(@))) is equal to

The value of (sin43^(@))/(cos47^(@))+(cos19^(@))/(sin71^(@))-8cos^(2)60^(@) is

sin47^(@)+cos77^(@)=cos17^(@)

sin163^(@)cos347^(@)+sin73^(@)sin167^(@)=(A)0 (B) (1)/(2)(C)1(D) none of these

The value of (sin 43^(@))/(cos 47^(@))+(cos 19^(@))/(sin 71^(@))-8cos^(2)60^(@) is

(cos17+sin17)/(cos17-sin17)