Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

How do you evaluate $cos ((53 pi) / 6)$ ?

1 Answer

Mar 22, 2016

$-sqrt(3)/2$

Explanation:

$cos((53pi)6)=cos(((48+5)pi)/6)=cos (4pi+5pi/6)=cos (5pi/6)$

$cos (5pi/6)=cos (pi-pi/6)=-cos(pi/6)=-sqrt(3)/2$

Related questions

See all questions in Trigonometric Functions of Any Angle

Impact of this question

6664 views around the world

You can reuse this answer
Creative Commons License