find the value of `sin18^0` and `cos36^0`

Find the value of sin 18^@ and hence deduce the value of cos 36^@ .

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

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

find the value of sin60^@cos3 0^@+sin3 0^@cos6 0^@

Find the value of sin330^(0)cos120^(0)+sin300^(0)*cos210^(@)

If cosx=tany ,cosy=tanz ,cosz=tanx , then the value of sinx is (a) 2cos18^0 (b) cos18^0 (c) sin18^0 (d) 2sin18^0

If cosx=tany ,cosy=tanz ,cosz=tanx , then the value of sinx is (a) 2cos18^0 (b) cos18^0 (c) sin18^0 (d) 2sin18^0

If cosx=tany ,coty=tanz ,cotz=tanx , then the value of sinx is (a) 2cos18^0 (b) cos18^0 (c) sin18^0 (d) 2sin18^0

Find the value of : (i) sin 30^(@)-cos 60^(@) (ii) sin 0^(@)+cos 0^(@)

Find the value of : (i) sin 30^(@)+cos 60^(@) (ii) sin 0^(@)-cos 0^(@)