what is value of sin1290
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sin (1290) can be written as sin (3×360+210)
further sin (210) then further sin 210 can be written as
sin (180+30) and then the value is sin(-30) which is -1/2
and its your final answer
further sin (210) then further sin 210 can be written as
sin (180+30) and then the value is sin(-30) which is -1/2
and its your final answer
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