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anonymous
 one year ago
sin(a) _______ = 1/2 [sin(a+b) + sin(ab)]
a) sin(b)
b) cos(a)
c) cos(b)
d) sin(a)
anonymous
 one year ago
sin(a) _______ = 1/2 [sin(a+b) + sin(ab)] a) sin(b) b) cos(a) c) cos(b) d) sin(a)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@ganeshie8 @hartnn @JackJordan

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0can you expand sin (a+b) and sin(ab) ? know the formulas?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0ok, here you go! \(\Large \sin (a+b) = \sin a \cos b +\cos a \sin b\) \(\Large \sin (ab) = \sin a \cos b \cos a \sin b\) just plug these in, on the right side.

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0like add them and see what u get...

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0anything getting cancelld out ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0idk why but i couldn't get anything from it

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0did you add? \(\Large \sin (a+b) + \Large \sin (ab) \\ \Large = \sin a \cos b +\cos a \sin b+ \sin a \cos b \cos a \sin b\) now you see any term getting cancelled out ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So when you add them, the latter terms cancel. You will be left with two lots of sin(a)cos(b) Now dividing by two, what do we get?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0jack buddy! let him/her do something :P

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0yep, sin a cos b so yeah

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hrtnn why'd you give him the answer? He thought it was cos b

hartnn
 one year ago
Best ResponseYou've already chosen the best response.0we all know who gave out the answer, so cut it out lol
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