Question

if 3 sinΘ=2 . prove that sin²Θ+cos²Θ=1​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

the answer of this question is

sinx+sin²x=1=>sinx=1-sin²x=cos²x=>cos²x=sinx =>cos⁴x=sin²x=> cos⁴x=1-cos²x=>cos⁴x+cos²x=1.