Question 615248
Use difference of two angles identity to find the exact value of sin 15 degrees.
sin 15º=sin(45-30)
=(sin45cos30-cos45sin30)
=&#8730;2/2*&#8730;3/2-&#8730;2/2*1/2
=&#8730;6/4-&#8730;2/4
=(&#8730;6-&#8730;2)/4