CBSE Class 11-science Answered
cos(90+x)=sinx,,how
Asked by ghoshshawata62 | 04 Mar, 2024, 08:16: PM
Expert Answer
cos(90-x)=sin(x)
sin x = AB/AC
cos (90-x) = AB/AC
Hence,
cos(90-x)=sin(x)
Now,
cos(90+x)= cos(180–90+x)
=cos[180–(90-x)]
=-cos(90-x)
=-sin x
Answered by Arun | 05 Mar, 2024, 09:59: AM
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