Question

If sin A=3/5, then find cosA and tanA​

Answer 1

sinA 3/5

sin^2a=9/25

1-cos^2a=9/25

cos^2a =1-9/25

cos^2a=16/25

cosA=4/5

tanA=sinA /cosA a= 3/5 4/5 =3/4

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