Question

If tan 2A = cot (A – 18°), where 2A is an acute angle, find the value of A.<br /><br />
NCERT Class X<br />
Mathematics - Mathematics<br /><br />
Chapter _INTRODUCTION TO<br />
TRIGONOMETRY​

Answer 1

Answer:

tan2A=cot(A-18)

Step-by-step explanation:

cot(90-2A)=cot (A-18)

90-2A=A-18

90+18=A+2A

108=3A

A=108/3

A=36