Sin^2 20°+sin^2 70=?
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Answer:
above picture is the explanation
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Answered by
1
Answer:
1
Step-by-step explanation:
sin^2 20 + sin^2 70 =
sin^2 20 + cos^2 20 (cos^2 20=sin^2 (90-20)) =
1 (sin^2 + cos^2 = 1)
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