Question

Given that tan x=5/12 find without using mathematical table or calculator,the value of,
Cos (90-x)

Answer 1

Answer:

5/13

Step-by-step explanation:

bcz cos (90-x)= sin x

tan x = 5/12 = perpendicular/ base

according to Pythagoras theorem

h^2=p^2+b^2

h^2 = 5^2+12^2

h = root (25+144)

h= 13

now

sin x = perpendicular / hypotenuse

sin x = 5/13