A teacher asks two students to solve the equation 2 cos x = 3 sin x for
Question:
A teacher asks two students to solve the equation 2 cos x = 3 sin x for −180°
a. Identify the mistake made by Student A.
b. Identify the mistake made by Student B and explain the effect it has on their solution.
c. Write down the correct answers to the question.
Transcribed Image Text:
Student A: 3 2 x = 56.3° or x = -123.7° tan.x = Student B: 4 cos²x = 9 sin²x 4(1-sin²x) = 9 sin²x 4 = 13 sin²x 4 sinx=t , x = ±33.7° or x = +146.3° 13'
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a The mistake made by Student A is in finding the value of x They correctly set up the equation as t...View the full answer
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Related Book For
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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