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kaylala
 one year ago
Find the value of the following using the concepts of both addition and subtraction formulas and reference angle:
sin 255
kaylala
 one year ago
Find the value of the following using the concepts of both addition and subtraction formulas and reference angle: sin 255

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eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1\[ \sin (225)=\sin (360255)=\sin (105)=\sin (45+60)=\\\sin (45)) \cos (60)\sin (60) \cos (45) \]

eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1\[ \sin (45)) \cos (60)\sin (60) \cos (45)=\frac{1+\sqrt{3}}{2 \sqrt{2}} \]

kaylala
 one year ago
Best ResponseYou've already chosen the best response.0why is it sin(360255) why the  sign there?

eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1\[ \sin(360255)= \sin (255) =(\sin( 255)) = \sin(255) \]

eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1Did you understand it?

kaylala
 one year ago
Best ResponseYou've already chosen the best response.0no sorry where did you get that?

eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1If you add 360 to an angle you do not change the sine of that angle sin(360+y) = sin(y) sin( 360 +(x)) =sin(x) = sin(x) If you do not know these elementary facts, please review them in your book or notes.

eliassaab
 one year ago
Best ResponseYou've already chosen the best response.1Have you heard about periodic functions?

kaylala
 one year ago
Best ResponseYou've already chosen the best response.0have no heard of periodic functions ever @eliassaab
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