(cos19^(@))/(sin71^(@))

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

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

sin81^(@)+sin71^(@

Value of the expression (sec11^(@)sec19^(@)-2cot71^(@))/(tan11^(@)) is equal to

Let alpha be the smallest integral value of x>0 such that tan19x=(cos96^(@)+sin96^(@))/(cos96^(@)-sin96^(@)). The last digit of alpha is

Evaluate the following: (i) (sin20o)/(cos70o)( ii) (cos19o)/(sin71o)

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