Question

solve:sin²x-5sinx+4=0​

Answer 1

Step-by-step explanation:

${sin}^{2} x - 5sin \: x + 4 \\ {sin}^{2} x - 4sin \: x - sin \: x + 4 \\ sinx(sinx - 4) - 1(sinx - 4) \\ (sinx - 4)(sinx - 1)$