Question

19. If tan2A = cot(A - 18"), where 2A is an acute angle, find the
value of A.​

Answer 1

Answer:

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

90-2a=a-18

90+18=a+2a

108=3a

a=108/3

36

Answer 2

Step-by-step explanation:

as, tan(@)=cot(90°-@)

given, tan2A=cot(A-18°)

cot(90°-2A)=cot(A-18°)

=> 90-2A=A-18

= 3A = 108

= A = 36°