Use a Graphing Utility to Solve the Equation on the Interval

question 330

Multiple Choice

Use a graphing utility to solve the equation on the interval 0 $0 ^ { \circ } \leq x < 360 ^ { \circ }$ . Express the solution(s) rounded to one decimal
place.
- $7 \cot ^ { 2 } x - 5 = 0$

• A) 103.2°, 145.2°, 283.2°, 325.2°
• B) 51.8°, 128.2°
• C) 70.5°, 109.5°, 180.0°
• D) 49.8°, 130.2°, 229.8°, 310.2°

---

Definitions:

Hyperopia

A common vision condition, also known as farsightedness, where distant objects can be seen clearly, but close ones do not come into proper focus.

Farsightedness

A common vision condition where distant objects can be seen clearly, but close ones do not come into proper focus, usually resulting from an eyeball that's too short or a lens that is not round enough.

Visual Field

The entire space that is visible in the side view when the eye concentrates on a single point in the center.

Scotoma

Small blind spot in the visual field caused by migraine or by a small lesion of the visual cortex.