Hello! Need help on this problem
prove that sin 15deg = (sqrt(6) - sqrt(2)) / 4
using
sinC= sinA cosB + cosA sinB
sinB= sinA cosC + cosA sinC
sinA= sinB cosC + cosB sinC
Hoping for your attention!=)
what you want to use is the addintion formulae sin(45-30)
=sin45cos30-sin30cos45
substitute in your exact values of sin45=1/sqrt2 sin30=0.5 cos45=1/sqrt2 and cos30=sqrt3/2 and then rearrange the fraction you get by multiplying by sqrt2 and that should be it.