Find the value of sin105.cos105

Steps to solve Find the value of sin105.cos105

=sin105.coos105

=2.(sin105.cos105)/2

=sin(2.105)/2

=sin210/2

=(1/2)sin(180+30)

=(1/2){sin180.cos30+cos180.son30}

=(1/2){0.(√/3)+(-1)(1/2)}

=-(1/4)

Hence the value of sin105.cos105 is -(1/4)

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