Verify: -(cotA+cotB)/(cotA-cotB) = sin(A+B)/sin(A-B)−cotA+cotBcotA−cotB=sin(A+B)sin(A−B) ?
2 Answers
Jul 30, 2016
Expand and simplify RHS then apply identities for
Explanation:
RHS =
RHS=
RHS=
RHS=
Jul 30, 2016
Dividing both numerator and denominator by
Verified