![How to derive the formula [math]\sin (x+y) = \sin(x)\cos(y) + ...](img.php?q=tbn:ANd9GcR2haMrbajCT1dyya78HQ-1Dzmhj29PpgEvkgJqFt3Q6CrvLUZ-_XKohQIL&s)
21 авг. 2015 г. · If you do the Taylor series expansion on the lefthand side of the expression, you will get (x - y)((sin x)/x - (sin y)/y) < x - y, so if (sin x)/ ... |
15 июл. 2023 г. · If sin x = -sin y then sin (x)=sin(-y) so for any value of x there is a value of -y=x then the possible values of x and y are x=0 to pi/2 ... |
28 дек. 2017 г. · General solution of given trig. equation is given as follows [math]\sin x=\sin y[/math] [math]x=2k\pi+y\ \text{or}\ x=2k\pi+\pi-y[/math] ... |
2 мая 2024 г. · This proves the identity sin(a - b) = sin(a)cos(b) - sin(b)cos(a) by breaking down the subtraction of angles into a difference of sines and ... |
1 нояб. 2018 г. · If sinx=siny, then can we write x=y by cancelling sin function on both sides? If not, what can we write from that? All related ( ... |
17 мая 2023 г. · I think you meant to ask “when does sin(x+y)=sinx + siny” as it's not true in general case. Consider x=y= ... |
23 авг. 2022 г. · There are two trigonometric identities that you should memorise. The first is Euler's identity: cosx+isinx=eix cos x + i sin x = e i x ... |
1 нояб. 2021 г. · How can I prove that sin x + sin y + sin z = 4cos(x/2) cos(y/2) cos(z/2), when x+y=z? |
16 февр. 2016 г. · What is the proof for the identity sin(x+y)=sinxcosy+cosx ... sin√x sin x equal sin sin√y sin y ? |
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