Question

If A + B = 90 and tan A = 3/4, the value of cot B is option. A. 3/4. B. 4/3. C. 3/5. D. 4/5

Answer 1

TanA=3/4=P/B

By applying Pythagoras theorem we get:- H=√P^2+B^2. =√3^2+4^2

=√9+16=√25=5

H=5

A+B=90°. B=90°-A

CotB=Cot(90°-A)=TanA=3/4

Optain (a) is the correct answer.