A geometry problem by Sathvik Acharya

Geometry Level 4

cos ⁡ 4 0 ∘ + cos ⁡ 8 0 ∘ + cos ⁡ 16 0 ∘ + cos ⁡ 24 0 ∘ = ? \cos 40^\circ+ \cos 80^\circ+ \cos 160^\circ+ \cos 240^\circ = \, ?


The answer is -0.5.

Sathvik Acharya by Sathvik Acharya , 17, India

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

1 solution

Ahmad Saad
Feb 14, 2017

1 Helpful 0 Interesting 0 Brilliant 0 Confused

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...