(Q15)If tan 2A=cot(A-18°),where 2A is an acute angle.Find the value of A
answer
Given that tan 2A=cot(A-18°)
cot(
°-2A)=cot(A-18°)
[tan θ= cot(
- θ)]
° - 2A=A - 18°
3A=
°
A=
°
clear