Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Cinta****Guest**

what angle has itself as a complement?

**pi man****Member**- Registered: 2006-07-06
- Posts: 251

An angle plus it's complement is equal to 90. Let's call the angle X. It's complement is therefore X also. And the sum of them is 90, so 2X = 90 and X = 45.

Offline

**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Well, two angles are complementary if they add to 90°.

If an angle x is the same as its complement then that means that x+x = 90°

From there, you can easily solve to find the value of x.

Edit: Gah, pi man beat me.

Why did the vector cross the road?

It wanted to be normal.

Offline

Pages: **1**