Question

Represent all the trigonometric ratios as positive and negative in the 4 quadrants?

For example sin is positive in 1st Quadrant but negative in 4th Quadrant.
Pls explain all the ratios like this.

Answer 1

Use the mnemonic

Explanation:

I use the following to remember the signs. ALL SILVER TEA CUPS .

These are used to denote which of the trigonometric identity is positive.

A ll - In 1st quadrant all the identities are positive
S ilver - In 2nd quadrant `sin theta` and `csc theta` are positive
T ea - In 3rd quadrant `tan theta` and `cot theta` are positive
C ups - In 4th quadrant `cos theta` and `sec theta` are positive.