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Today at 1:12 PM
Mathematics

Answered

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can someone help me with this, I’ll give ratings class=

Answer :

Today at 1:16 PM

Answer:

-0.6000

Step-by-step explanation:

sin² A + cos² A = 1

sin² A = 1 - Cos² A

= 1 - (4/5)²

= 1 - 0.64

= 0.36

sin A = sqrt 0.36 = 0.6

in quadrant IV sin is negative

sin A = -0.6000

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