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kaylala
Group Title
Find the value of the following using the concepts of both addition and subtraction formulas and reference angle:
sin 255
 9 months ago
 9 months ago
kaylala Group Title
Find the value of the following using the concepts of both addition and subtraction formulas and reference angle: sin 255
 9 months ago
 9 months ago

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kaylala Group TitleBest ResponseYou've already chosen the best response.0
@eliassaab
 9 months ago

kaylala Group TitleBest ResponseYou've already chosen the best response.0
@ganeshie8
 9 months ago

eliassaab Group TitleBest ResponseYou've already chosen the best response.1
\[ \sin (225)=\sin (360255)=\sin (105)=\sin (45+60)=\\\sin (45)) \cos (60)\sin (60) \cos (45) \]
 9 months ago

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

kaylala Group TitleBest ResponseYou've already chosen the best response.0
why is it sin(360255) why the  sign there?
 9 months ago

eliassaab Group TitleBest ResponseYou've already chosen the best response.1
\[ \sin(360255)= \sin (255) =(\sin( 255)) = \sin(255) \]
 9 months ago

eliassaab Group TitleBest ResponseYou've already chosen the best response.1
Did you understand it?
 9 months ago

kaylala Group TitleBest ResponseYou've already chosen the best response.0
no sorry where did you get that?
 9 months ago

eliassaab Group TitleBest ResponseYou've already chosen the best response.1
If 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.
 9 months ago

eliassaab Group TitleBest ResponseYou've already chosen the best response.1
Have you heard about periodic functions?
 9 months ago

kaylala Group TitleBest ResponseYou've already chosen the best response.0
have no heard of periodic functions ever @eliassaab
 9 months ago
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