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√1-sen²x+ 3 sen x = 1
√1-sen²x= 1 -3 sen x elevamos al cuadrado
(√1-sen²x)²= (1 -3 sen x )²
1-sen²x= 1 -6senx + 9sen²x ordenando términos tenemos
10sen²x -6senx =0 factorizo
senx(10senx- 6)= 0
senx = 0 y senx = 6/10 =3/5
x= 0° y x = 36°52'11,63"