Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

Question #2e598

1 Answer

Feb 8, 2017

#1/2#

Explanation:

On the trig unit circle,
#cos (-t) = cos (t) = 1/2#

Related questions

See all questions in Trigonometric Functions of Any Angle

Impact of this question

1066 views around the world

You can reuse this answer
Creative Commons License