TRIGONOMETRIC EQUATIONS - Exercise 3

Find all solutions of the equation tex2html_wrap_inline81 in the interval tex2html_wrap_inline83 .

Solution: We first find all solutions of the related equation tex2html_wrap_inline85 (see Example 1), and find that tex2html_wrap_inline87 and tex2html_wrap_inline89 , tex2html_wrap_inline91 , comprise all the solutions. Hence

displaymath75

from which it follows that

displaymath76

The solution angles A which lie in the interval tex2html_wrap_inline83 are therefore

displaymath77

[Trigonometry] [Back] [Next]
[Geometry] [Algebra] [Differential Equations]
[Calculus] [Complex Variables] [Matrix Algebra]

S.O.S MATHematics home page

Do you need more help? Please post your question on our S.O.S. Mathematics CyberBoard.

Luis Valdez-Sanchez
Tue Dec 3 17:39:00 MST 1996

Copyright 1999-2017 MathMedics, LLC. All rights reserved.
Contact us
Math Medics, LLC. - P.O. Box 12395 - El Paso TX 79913 - USA
users online during the last hour