Question 645729
Evaluate the expression without using a calculator
(sin pi/6 cos pi/4 - sin pi/4 cos pi/6)^2
=(1/2*√2/2-√2/2*√3/2)^2
=(√2/4-√6/4)^2
=2/16-2√12/16+6/16
=1/8-√12/8+3/8
=4/8-√12/8
=(4-√12)/8