Mathematics 10 — Exercise 7.1 · Q1 (i)

Full question

Determine the algebraic sign (positive or negative) of sin 55°.

sin(55°)

Step-by-step solution

  1. 55° lies in quadrant 1.

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

Answer

Positive (+).