If it was italic, sin(x) would really mean s×i×n×x.]]>

It's been a while ... my excuse is I've been away bird watching. Had this method just before I went ... only just got back.

Will check it later for typos.

Bob

]]>has its right angle at C. D is an interior point of side BC such that the angle CDA

is 75°. Given that triangle ADC has unit area, prove that BD=2.]]>