Question

The excise duty on a certain item has been reduced to 7500 from 11,600, find the percentage
reduction in the excise duty for that item.​

Answer 1

Answer:

ATQ

ᴛᴀɴ 2A = ᴄᴏᴛ( A-18° )

=>ᴛᴀɴ 2A = ᴛᴀɴ [ 90-(A-18°)

=>2A = 90- A+18

=>2A+A = 108

=>3A = 108

=>A=108/3

=>A= 36