tiin
gu
Sign up
Home
/
Engineering
/
JEE
/
Maths
/
Trigonometric Functions
/
Double angle formula: sin 2A = 2 sin A cos A
Double angle formula: sin 2A = 2 sin A cos A (sin 2A = 2 sin A cos A)
jee-advanced
jee-main
sin 2A = 2 sin A cos A
What each symbol means
Symbol
What it stands for
A
Any angle
When to use this
Valid for all A. Also: sin 2A = 2 tan A/(1+tan²A).
