if x is acute and sin(x+10∘ )=cos(3x−68∘ ), find x in degrees.
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Answer:
GivenSin(x+10)=Cos(3x−68)
⟹Sin(x+10)=Sin[90−(3x−68)]
⟹x+10=90−(3x−68)
⟹x+10=90−3x+68
⟹x+3x=90+68−10
⟹4x=158−10
⟹4x=148
⟹x= 148/4
⟹x=37
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