katiefromm1 katiefromm1

19-06-2021
Mathematics

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URGENT PLEASE HELP: 1 - 2 cos^2r = - sin^2r - 1

True
False

URGENT PLEASE HELP 1 2 cos2r sin2r 1 True False class=

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surjithayer10otahza surjithayer10otahza

19-06-2021

Answer:

false

Step-by-step explanation:

1-2cos²r=1-2(1-sin²r)=1-2+2sin²r=2sin²r-1

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