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EvaluateCos^2 20° + Cos^2 70° / 3 (Sin^2 59° + Sin^2 31°)full explanation. ..​

Answer»

ANSWER:

Step-by-step explanation:

COS2 20°+cos2(90-20)/3(SIN2 59°+sin2 (90-59) )

=Cos2 20°+sin2 20°/3(sin2 59°+cos2 59°)

=1/3(1)

=1/3



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