sin(A - B)÷
sin A sin B=
cot B-cot A.
Answers
Answered by
1
Step-by-step explanation:
sin(A-B) =sinaAcosB-sinBcosA
so,
sin(A-B) ÷sinAsinB=
=[sinAcosB/sinAsinB]-[sinBcosA/sinAsinB]
=(cosB/sinB)-(cosA/sinA)
=cotB-cotA
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