luriafils11 luriafils11

19-06-2020
Mathematics

contestada

If sin 2X = COS ZY and m2X = 72°, what is the measure of ZY?
18°
072°
90°
108°

Respuesta :

lucasella lucasella

19-06-2020

Answer:

18°

Step-by-step explanation:

sin 2x=cos zy

m(2x)=72°

cos(π/2-a)=sin a

cos(π/2-72°)=sin72°

cos18°=sin72°

=>m(zy)=18°

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tyjohnofficial tyjohnofficial

19-06-2020

The answer would be 18’

Answer Link

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