3 years ago

Sin^2(20°)+cos^2(20°)=

Mathematics

1 answer:

inessss [21]3 years ago

5 0

Answer:

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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