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Math4Life
Group Title
Use a half–angle identity to find the exact value of sin 105°
 one year ago
 one year ago
Math4Life Group Title
Use a half–angle identity to find the exact value of sin 105°
 one year ago
 one year ago

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ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
\[\sin(90 + 15) = \sin(90)\cos(15)+\sin(15)\cos(90)\]The second term would cancel.
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
I would use the halfangle identity to find \(\sin(15)\).
 one year ago

Math4Life Group TitleBest ResponseYou've already chosen the best response.0
I'm confused, we haven't learned this yet, i'm doing extra credit where we do a practice on the next thing we learn that we haven't been taught yet to see how we do can you explain?
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Do you know what the half angle identity says?
 one year ago

Math4Life Group TitleBest ResponseYou've already chosen the best response.0
what does it say?
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Sorry, was afk. I think it is a lot of typing so here: http://www.mathwords.com/h/half_angle_identities.htm
 one year ago

Math4Life Group TitleBest ResponseYou've already chosen the best response.0
Trig identities that show how to find the sine, cosine, or tangent of half a given angle.
 one year ago

Math4Life Group TitleBest ResponseYou've already chosen the best response.0
@ParthKohli You there? What's next?
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Use those to find \(\sin(15)\) from \(\sin(30)\).
 one year ago
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