.If sinA + sin²A =1, then what is the value of expression ( cos²A+cos⁴A) is:​

Question

.If sinA + sin²A =1, then what is the value of expression ( cos²A+cos⁴A) is:​

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Luna 3 weeks 2021-09-04T16:48:59+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-04T16:50:32+00:00

    Answer:

    1

    Step-by-step explanation:

    sin a= 1-sin^2a

    Sina =cos^2a

    cos^4a =sin^2a(squaring both sides)

    cos^4a+cos^2a=sin^2a+Sina (adding above two equations)

    =1(given)

    hope it helps.

    mark me as the brainliest.

    0
    2021-09-04T16:50:43+00:00

    Answer:

    the answer is 4 , pls mark me as the brainliest. Plus est en vous.

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