sin thetha +cos( 90+ thetha)+sin(180-thetha)+sin(180+thetha)
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Answer:
sin∅+sin ∅+cos∅+cos∅
=2sin∅+2 cos∅
=2(sin∅+cos∅)
=2*1=2
Step-by-step explanation:
cos(90-∅)=sin∅
sin(180-∅)=cos∅
And also,
sin(180+∅)=cos∅
sin∅+cos∅=1
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