Question

If 4tanA=3 evaluate 4sinA -cosA+1/4sin-cosA-1

Answer 1

4tanA,=3 (given)

tanA=3/4

So,. Perpendicular,=3

      base=4

      Hypotanouse=5.  Then

SinA=3/5.  CosA=4/5

Putting these values in equ..

Then,

 

   4×3/5-4/5+1/4×3/5-4/5-1

  =-1/20