arsetpopeye
Sin 3x = cos 2x sin 3x = sin (90 - 2x) 3x = 90 - 2x 5x = 90 x = 18
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DB45
Sin 3x = cos 2x sin 3x = sin (90- 2x) 3x = 90 - 2x + k.360 5x = 90 + k.72 x = 18 + k. 72 k = 0,1,2,3,4,.. ... k= 0 --> x = 18 k = 1 --> x = 90 k = 2 --> x = 162 k = 3 --> x = 234 k = 4 --> x = 306 k = 5 --> x = 378 (tm) .
sin 3x = sin (90 - 2x)
3x = 90 - 2x
5x = 90
x = 18
sin 3x = sin (90- 2x)
3x = 90 - 2x + k.360
5x = 90 + k.72
x = 18 + k. 72
k = 0,1,2,3,4,.. ...
k= 0 --> x = 18
k = 1 --> x = 90
k = 2 --> x = 162
k = 3 --> x = 234
k = 4 --> x = 306
k = 5 --> x = 378 (tm)
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