[" (c) "15^(@)" (d) "60^(@)],[" 10.What is the value of "sin18^(@)cos36^(@)?]

What is the value of sin 18^@ cos 36^@ ?

What is the value of (sin18^@)/(cos72^@) .

find the value of sin18^(0) and cos36^(@)

Find the Value of sin18^(@) or cos72^(@)

Value of sin60^@//cos60^@

What is the value of (cos10^@+sin10^@)/(cos10^@-sin10^@) ?

the value of sin78^(@)-sin18^(@)+cos132^(@) is

Evaluate sin 60^(@) cos 30^(@) + sin 30^(@) cos 60^(@) . What is the value of sin(60^(@) + 30^(@)) . What can you conclude ?

Evaluate sin 60^(@) cos 30 ^(@) -sin 30^(@) cos 60 ^(@) , What is the value of sin (60^(@) -30 ^(@) ) What can you conclude ?