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kaylala
 2 years ago
Find the value of the following using the concepts of both addition and subtraction formulas and reference angle:
sin 255
kaylala
 2 years 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
 2 years 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
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.0why is it sin(360255) why the  sign there?

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

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

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

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

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