Question

If tan ø= 3/4. find the value of cos ø ​

Answer 1

Solution,

tanθ=3/4

p/b=3/4

p=3 and b=4

Now, Using Pythagoras theorem

h²=p²+b²

or,h=√3²+4²

or,h=√25

Therefore,h=5 units

Again,

cosθ=b/h

cosθ=4/5

Explanation: