Find the value of the expression `(sin20^@(4cos20^@+1))/(cos20^@cos30^@)`

Compute the square of the value of the expression (4+sec20^(@))/(cos ec20^(@))

Compute the square of the value of the expression (4+sec20^(@))/(cos ec20^(@))

Compute the square of the value of the expression (4+sec20^(@))/(cos ec20^(@))

If sin20^(@)=p, " then find the value of " ((sin380^(@)-sin340^(@))/(cos380^(@)+cos340^(@))) .

Find the value of the following: (cos70^(@))/(sin20^(@))+(cos59^(@))/(sin31^(@))+(costheta)/(sin(90^(@)-theta))-8cos^(2)60^(@)

Find the value of sin80cos20cos80sin20

The value of (sin10^(@)+sin20^(@))/(cos10^(@)+cos20^(@)) equals

The value of (sin10^(@)+sin20^(@))/(cos10^(@)+cos20^(@)) equals

The value of (sin^2 20^@ + cos^4 20^@)/(sin^4 20^@+cos^2 20^@) is

(2cos40^(@)-cos20^(@))/(sin20^(@))