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

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

True
False

URGENT PLEASE HELP: 1 - 2 cos^2r = - sin^2r - 1 True False-example-1
User Dormitkon
by
7.1k points

1 Answer

5 votes

Answer:

false

Explanation:

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

User Srinath Thota
by
7.9k points
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