Question

cot(6-5A)= tan7A,7A is acute angle then find A?​

Answer 1

Step-by-step explanation:

cot(6-5A)= tan7A

cot 6-5A= tan(90-7A)

6-5A= 90-7A

-5A+7A= 90-6

2A= 84

A= 84/2

A= 42

then cot ( 6-5A) = 6-5(42)

= 6-210

= -204

tan(90-7A)= 90-7(42)

= 90-294

= - 204

= cot(6-5A)= tan7A