Mathematics 10 — Exercise 7.1 · Q1 (iii)

Full question

Determine the algebraic sign (positive or negative) of tan 111°.

tan(111°)

Step-by-step solution

  1. 111° lies in quadrant 2.

  2. In quadrant I all six ratios are positive. In quadrant II only sine and cosecant are positive.

Answer

Negative (−).