Question

prove that sin^(2)(alpha-(pi)/(4))+sin^(2)(alpha(pi)/(12))-sin^(2)(alpha-(pi)/(12))=(1)/(2)

Answer 1

Answer:

For any alpha in R , prove that cos ^(2) (alpha -(pi)/(4))+ cos ^(2) (alpha + (pi)/(12))- cos ^(2) (alpha -(pi)/(12))=(1)/(2)

Answer 2

Answer:

answer is in the attachment please mark as brainlist