Math, asked by pritokhedar, 10 months ago

find the value of cos (13π/2 - π/6)

Answers

Answered by anshgang1234

1

We have cos (13π/2-π/6)

=cos(39π/6-π/6)

=cos(38π/6)

=cos(6π-2π/6)

we know (cos n360-theta)=cos theta

=cos2pi/6

=cos360/6

{putting pi =180}

=cos 60

=1/2

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