Question

If sin A = 4/5, then the value of 4sin A -2 cos A / 4sin A +3 cos A

Answer 1

here is your answer. I hope this will help you

Answer 2

sin A= P/H
draw a right angled triangle whose
Perpendicular is 4k
hypotenuse is 5K
by the help of Pythagoras theorem find the value of Base
H²=P²+B²
B²=H²-P²
B²=25k²-16k²
B²=9k²
B=3k

now you have all the values and you can put these values in the following:

Sin A =P/H
Cos A =B/H

4(4/5)-2(3/5) ÷ 4(4/5)+3(3/5)
16/5-6/5 ÷ 16/5+9/5
10/5 ÷ 25/5
2/5 is the answer.

I hope you like the answer.

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