Math, asked by salonibansal2828, 5 months ago

what is the value of cos(π\4 + x)??

Answers

Answered by lahari60

1

Answer:

identity

Cos(A+B) =COSACOSB-SINASINB

Cos(π/4+x)

=Cosπ/4Cosx-Sinπ/4Sinx

=x/√2-x/√2

=0

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