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# Tag Archives: Trigonometry

## [Soln] 2013 AIME I Problem 14

2013 AIME I 14. For , let and so that . Then where and are relatively prime positive integers. Find .

## 2013 AIME I Problem 14

## [Soln] 2014 Singapore MO (Open Rd 1) Problem 16

2014 SMO (Open-Rd1) 16. Let be a triangle with , , and . Assume that . Find the value of

## 2014 Singapore MO (Open Rd 1) Problem 16

2014 SMO (Open-Rd1) 16. Let be a triangle with , , and . Assume that . Find the value of

## How I Remember Trig Identities Part 2

In the last post, I went through how I remember the basic trig functions, the even-odd identities, the co-function identities and the Pythagorean identities (for the full list of trig identities, click here). In this post, I will go through … Continue reading

## How I Remember Trig Identities Part 1

There are many trigonometric identities that students are expected to know for math olympiad, and it’s not always easy to remember all of them. This post will walk you through how I remember just a few key identities and use … Continue reading