Question

if cos A=3/5then the value of 5sinA-3tan a is

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Answer 1

Answer:

cosA=3/5 =b/h

let's b =3x and h=5x

p=4x

sinA = p/h =4x/5x = 4/5

tanA=p/b = 4x/3x =4/3

5sinA - 3tanA

= 5 × 4/5 - 3 × 4/3

=4-4

=0