Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

If sin x = 0.6, what is the value of cos x?

1 Answer

Apr 15, 2015

${sin}^{2} (x) + {cos}^{2} (x) = 1$ $sin^2(x)+cos^2(x) = 1$

If $sin (x) = 0.6$ $sin(x) = 0.6$
then
${(0.6)}^{2} + {cos}^{2} (x) = 1$ $(0.6)^2+cos^2(x) = 1$

${cos}^{2} (x) = 1 - 0.36 = 0.64$ $cos^2(x) = 1 - 0.36 = 0.64$

$cos (x) = \pm 0.8$ $cos(x) = +- 0.8$

Related questions

See all questions in Relating Trigonometric Functions

Impact of this question

94330 views around the world

You can reuse this answer
Creative Commons License