Use the Law of Cosines to Solve the Given Triangle $$a = 11 , b = 15 , c = 21$$

question 47

Multiple Choice

Use the law of Cosines to solve the given triangle. Round your answer to two decimal places. $$a = 11 , b = 15 , c = 21$$

• A) \(\quad A \approx 43.16 ^ { \circ } , B \approx 43.16 ^ { \circ } , C \approx 93.68 ^ { \circ }\)
• B) \(A \approx 30.11 ^ { \circ } , B \approx 106.73 ^ { \circ } , C \approx 43.16 ^ { \circ }\)
• C) \(A \approx 43.16 ^ { \circ } , B \approx 30.11 ^ { \circ } , C \approx 106.73 ^ { \circ }\)
• D) \(A \approx 30.11 ^ { \circ } , B \approx 43.16 ^ { \circ } , C \approx 106.73 ^ { \circ }\)
• E) \(A \approx 106.73 ^ { \circ } , B \approx 43.16 ^ { \circ } , C \approx 30.11 ^ { \circ }\)

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Definitions:

Reinforcement

In behavioral psychology, a process by which a stimulus increases the probability of a response through its presentation (positive reinforcement) or removal (negative reinforcement).

Prelinguistic Vocalization

Early sounds made by infants before they acquire language, including cooing and babbling, important for speech development.

Brain Structures

The various parts of the brain, each responsible for different functions, including thought, emotion, sensation, and movement.

Language Development

The process by which children learn to communicate through spoken words, gestures, or written symbols, typically progressing from babbling to forming sentences.