Skip to content
Library
Solve
Practice
Search 7,000+ topics
/
Color theme
Dark
Light
Sign in
Library
Solve
Practice
Search everything
About Expii
Contributors
Topic directory
Hidden
Beyond High School Geometry
Trig Values and Identities
Special Trig Values
Special Trig Values: Multiples of π/12
Read this topic
Explanations
1
We'll use degrees instead of radians here. The multiples of 151515 degrees are particularly nice because they are half of 30. Let's find sin15\sin 15sin15 first. There are two …
By Vincent Huang, Anthony Jiang
Find a topic
Type a concept, like “slope” or “photosynthesis”.
↑ ↓ to choose · Enter to open
Search explanations and problems