The value of `2tan18^@+3sec18^@-4cos18^@` is

cos18^@-sin18^@=

The value of tan72^(@).tan18^(@) is

What is the value of tan18^(@) ?

The value of 4 cos 18^(@)-(3)/(cos 18^(@))-2 tan 18^(@) is equal to

The value of 4 cos 18^(@)-(3)/(cos 18^(@))-2 tan 18^(@) is equal to

The value of 4 cos 18^(@)-(3)/(cos 18^(@))-2 tan 18^(@) is equal to

Find the value of cos 18^(@)

Select and write the correct answer from the given alternatives in each of the following: The value of tan18^@+tan27^@+tan18^@.tan27^@ is equal to…………..