Use a Graphing Utility to Solve the Equation on the Interval

question 393

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.
- $3 \cos ^ { 2 } x + 2 \cos x = 1$

• A) 49.8°, 130.2°, 229.8°, 310.2°
• B) 51.8°, 128.2°
• C) 70.5°, 180.0°, 289.5°
• D) 103.2°, 145.2°, 283.2°, 325.2°

---

Definitions:

Sporophytes

The diploid, spore-producing phase in the life cycle of plants that undergo alternation of generations.

Triploid Cell

A cell that has three sets of chromosomes, often occurring in plants and some species of fish and amphibians.

Angiosperms

These are flowering plants, making up the largest group in the plant kingdom, characterized by producing seeds enclosed within a fruit.

Endosperm

Endosperm is the nutritive tissue within seeds of flowering plants, serving to feed the embryo during germination.