Question

Find the value of sinx if tanx=5/4

Answer 1

sinx=5/√41

Explanation:

tanx=5/4=p/b

According to Pythagoras's theroem;

h=√p^2+b^2

or, h=√5^2+4^2

or, h=√25+16

:-h=√41

Now,

sinx=p/h

=5/√41