Question

find value of cos75​

Answer 1

Answer:

cos75=cos(π\4+π\6)

=(1/√2+√3/2)

=(2+√6/2√2)

Ans=1+√3/√2

Answer 2

=cos(45+30)=(1/√2)*(√3/2)-(1/√2)*(1/2)

=(√3-1)/2√2