Use the Formula $\tan \psi = \left| \frac { m _ { 2 } - m _ { 1 } } { 1 + m _ { 1 } m _ { 2 } } \right|$

question 28

Essay

Use the formula $\tan \psi = \left| \frac { m _ { 2 } - m _ { 1 } } { 1 + m _ { 1 } m _ { 2 } } \right|$ to find the acute angle $\psi$ formed by the two lines $y - x = 0$ and $2 x - 3 y = 1$ .

---

Definitions:

Indorse

To sign the back of a financial instrument, such as a check, to make it payable to someone other than the original payee or to endorse a document formally.

Payee

The party in a financial transaction who receives the payment.

Negotiating

Negotiating involves discussing terms and conditions with the goal of reaching an agreement or compromise on matters of business, trade, or interpersonal issues.

Dishonored

A term referring to a financial instrument, such as a check, that has been refused payment by the bank upon presentation.