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Hope this helps!
Hope this helps!
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Anonymous:
can you please tell how sin(660)=sin(360+330) and how cos(420) = cos(360+30)
Sin 660 can be written as
sin(360 + 300) ----------------- sin(360 + theta) = sin theta
sin 300.
Its my mistake, It should be cos(360 + 60).
cos 420 can be written as
cos(360 + 60) ----------------- cos(360+ theta) = cos theta
sin 420.
sin(360 + 300) ----------------- sin(360 + theta) = sin theta
sin 300.
Its my mistake, It should be cos(360 + 60).
cos 420 can be written as
cos(360 + 60) ----------------- cos(360+ theta) = cos theta
sin 420.
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