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Sin^2(20°)+cos^2(20°)=
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Sin^2(20°)+cos^2(20°)=

User Grant Lammi
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1 Answer

6 votes

Answer:

1

Explanation:

There is an important trig identity which you must know: (sin x)^2 + (cos x)^2 = 1.

Therefore, sin^2(20°)+cos^2(20°) = 1

User Isaac Obella
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