Question

If sin A equal to 4/5 then find tan A

Answer 1

Step-by-step explanation:

cos^2= 1- sin^2

cos^2=1-{4÷5}^2

cos^2=1-16÷25

cos=√1-16÷25

tan=sin÷cos

tan=4÷5÷√1-16÷25

1. please mark full star

Answer 2

Answer:

in a traingle ABC

sinA=4/5=P/H =BC/AC

hence by Pythagoras theorem:

(AB)^2=AC^2-BC^2

AB^2= 5^2-4^2

AB^2=9

hence AB=3

so tan A = P/B = 4/3