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Mice21 [21]
3 years ago
11

Sin^2(20°)+cos^2(20°)=

Mathematics
1 answer:
inessss [21]3 years ago
5 0

Answer:

1

Step-by-step 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

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Step-by-step explanation:

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