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freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-296-angular-bisector-and-tangent.md
gikf 47fc3c6761 fix(curriculum): clean-up Project Euler 281-300 (#42922)
* fix: clean-up Project Euler 281-300

* fix: missing image extension

* fix: missing power

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>

* fix: missing subscript

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
2021-07-22 12:38:46 +09:00

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---
id: 5900f4941000cf542c50ffa7
title: 'Problem 296: Angular Bisector and Tangent'
challengeType: 5
forumTopicId: 301948
dashedName: problem-296-angular-bisector-and-tangent
---
# --description--
Given is an integer sided triangle $ABC$ with $BC ≤ AC ≤ AB$. $k$ is the angular bisector of angle $ACB$. $m$ is the tangent at $C$ to the circumscribed circle of $ABC$. $n$ is a line parallel to $m$ through $B$.
The intersection of $n$ and $k$ is called $E$.
<img class="img-responsive center-block" alt="triangle ABC, with k - the angular bisector of angle ACB, m - tangent at point C, n - line parallel to m through B, and point E - intersection of k and n" src="https://cdn.freecodecamp.org/curriculum/project-euler/angular-bisector-and-tangent.gif" style="background-color: white; padding: 10px;">
How many triangles $ABC$ with a perimeter not exceeding $100\\,000$ exist such that $BE$ has integral length?
# --hints--
`angularBisectorAndTangent()` should return `1137208419`.
```js
assert.strictEqual(angularBisectorAndTangent(), 1137208419);
```
# --seed--
## --seed-contents--
```js
function angularBisectorAndTangent() {
return true;
}
angularBisectorAndTangent();
```
# --solutions--
```js
// solution required
```