Can you figure out this trigonometry problem?
I found this high school math question on another Web site and can’t figure out how to do it. There must be something obvious that I am missing.
8sin(10)sin(30sin(50)sin(70) = ½
I tried to make use of the identity sin 2x = 2sin x cos x, but did not get anywhere.
This question is in the General Section. Responses must be helpful and on-topic.