Mathematics 10 — Exercise 7.1 · Q1 (iv)

Full question

Determine the algebraic sign (positive or negative) of sec 179°.

sec(179°)

Step-by-step solution

  1. 179° lies in quadrant 2.

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

Answer

Negative (−).