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rubyhunterBest ResponseYou've already chosen the best response.1
what does that mean ?
 one year ago

rubyhunterBest ResponseYou've already chosen the best response.1
can you walk me through it
 one year ago

jishanBest ResponseYou've already chosen the best response.0
that means angle lies in 3rd quadrant.
 one year ago

rubyhunterBest ResponseYou've already chosen the best response.1
i still dnt get it how do i plug it in
 one year ago

rubyhunterBest ResponseYou've already chosen the best response.1
is it sin(x=180) = sinx
 one year ago

jishanBest ResponseYou've already chosen the best response.0
in 3rd quadrant sin ,cos,sec,cosec ve but tan, cot +ve.
 one year ago

jayz657Best ResponseYou've already chosen the best response.0
using the trig identity sin(a+b) = sin(a)cos(b) + cos(a)sin(b) sin(x+pi) = sin(x)cos(pi)+ cos(x)sin(pi) cos(pi) = 1 sin(pi) = 0 and you get sin(x)(1) + cos(x)(0) = sin(x)
 one year ago

Praja_01Best ResponseYou've already chosen the best response.0
sin(180+x)= sinx since sin is symmetrically opposite.
 one year ago
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