Prove that
Sin(270+A)=-cosA,and tan(270+A)=-cotA
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Answered by
19
Answer:below given is the answer
Step-by-step explanation:
Sin(270+A)
=Sin{180+(90+A)}
= -Sin(90+A)
= -CosA
Hence proved.
Tan(270+A)
=Tan{180+(90+A)}
=Tan(90+A)
=-CotA
Hence proved
Answered by
1
Answer:
so ans is
Step-by-step explanation:
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