If A + B = 90° and , then the value of tan B is ______.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. .
= p/b
⇒ H2 = p2 + b2
⇒ 25 = 9 + b2
⇒ b = 4
A + B = 90°
⇒ A = 90° - B
tan A = p/b = 3/4
⇒ tan (90° - B) = 3/4
⇒ cot B = 3/4 {cotx = 1/tanx}
So, tan B = 4/3