OpenStudy (aonz):

given that t = tan112.5 (a) show that 2t/ 1 - t^2 = 1 (b)Show that tan112.5 = - sqrt2 - 1 I have done part (a)

4 years ago
OpenStudy (anonymous):

Well tan112.5= -2.414213562. And -sqrt2= -1.414213562. Subtracting one from that would give you equal numbers.

4 years ago
OpenStudy (aonz):

well meant to show it using trig identities and stuff :/

4 years ago
OpenStudy (anonymous):

Oh.. Well sorry, I can't quite help you there /:

4 years ago