Question

Find the value of cos inverse of 1 by root3

Answer 1

Answer:

Refer the attached picture.

Answer 2

We can recall the cosine function is defined as the ratio of the length of the base or adjacent side of the triangle (next to the angle) to the length of the hypotenuse (the triangle's longest side) in a right-angled triangle. The inverse of the Cosine function, the Inverse Cosine function is used to calculate the angles in a right-angled triangle.

Given:

$cos^{-1} \frac{1}{\sqrt{3} }$

Find: Solve

Solution: $cos^{-1} \frac{1}{\sqrt{3} }$

$cos^{-1} (cos 54,7\cir$°$)$

$=54,7$°

Hence, answer is $54,7$°