Question

Angle x is an acute angle in a triangle. If cos x=4/5, then the sin x=

Answer 1

The answer is 3/5 because u need to find the missing side in order to find sin

Answer 2

Answer:

$\bf \sin x =\frac{3}{5}$  

Step-by-step explanation:

Angle x is an acute angle in a triangle.

The measure of cosine angle is given to be :

$\cos x = \frac{4}{5}$

Now, we need to find the measure of the sine angle for the same triangle.

$\cos x = \frac{Base}{Hypotenuse}$

⇒ Base = 4 units and Hypotenuse = 5 units

So, Length of perpendicular = 3 units ( By using Pythagoras theorem)

$\sin x=\frac{Perpendicular}{Hypotenuse}\\\\\implies\bf \sin x =\frac{3}{5}$