Find the value of Sin²20° + Sin² 70° - Sin² 45°.
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o is the answer of the question
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Answer:
sin^220°+sin^270°-sin^245°
=sin^220°+sin^2(90-20)°-(1/√2)^2
=sin^220°+cos^220°-1/2
=1-1/2
=1/2
Step-by-step explanation:
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