Sum To Product Sin−Sin identity (sin A-sin B=2cosfracA+B2sinfracA-B2)
jee-advancedjee-main
sin A-sin B=2cosfracA+B2sinfracA-B2
What each symbol means
| Symbol | What it stands for |
|---|---|
| A, B, x, a, b | As in standard NCERT treatment; domain restrictions apply for tan. |
When to use this
Standard NCERT conditions; tan identities exclude odd multiples of π/2 where undefined.