Course CMPSCI 287
Due 11:59 PM, 9 FEB 99 as hwk1.scm
Write a Scheme Function cosrule which uses the cosine
rule
to work out the length of one side c of a triangle given the
lengths a,b of the other two sides and the included angle
t between them. The function call should be
(cosrule a b t)
and it should return the length of the side as a result.
(example '(cosrule 10 10 0) 0.0)