1. sin(x+20) = cos(2x+10) 2. sin (2x+14) = cos(x-5)

Question

1. sin(x+20) = cos(2x+10)
2. sin (2x+14) = cos(x-5)

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Ximena 1 week 2021-11-19T03:59:57+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-11-19T04:01:38+00:00

    Answer:

    x=20°

    2.

    x=27°

    Step-by-step explanation:

    sin(x+20)=cos (2x+10)

    =sin (90-(2x+10))

    so x+20=90-(2x+10)

    x+20+2x+10=90

    3x=90-30

    3x=60

    x=60/3=20

    2.

    2x+14+x-5=90

    3x+9=90

    3x=90-9=81

    x=81/3=27

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