prove that
a)cos(90-/theta)cosec(90-/theta)=tan/theta
1
Expert's answer
2012-07-03T07:50:26-0400
cos(90-/theta)cosec(90-/theta)=tan/theta First of all, cos(90-/theta)=sin(/theta) also cosec(90-/theta)=1/sin(90-/theta)=1/cos(/theta) So we have& cos(90-/theta)cosec(90-/theta)= sin(/theta)/cos(/theta)=tan/theta
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