(a) Solve the equation on the given interval, expressing the solution for x in terms of inverse trigonometric functions. (Enter your answers as a comma-separated list.) 10(cos x)? - 9 cos x – 1 = 0 on [7/2, 1] X = (b) Use a calculator to approximate the solution in part (a) to three decimal places. (Enter your answers as a comma-separated list.)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 65E
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(a) Solve the equation on the given interval, expressing the solution for x in terms of inverse trigonometric functions. (Enter your answers as a comma-separated list.)
10(cos x)2 – 9 cos x – 1 = 0 on [T/2, n]
X =
(b) Use a calculator to approximate the solution in part (a) to three decimal places. (Enter your answers as a comma-separated list.)
X =
Transcribed Image Text:(a) Solve the equation on the given interval, expressing the solution for x in terms of inverse trigonometric functions. (Enter your answers as a comma-separated list.) 10(cos x)2 – 9 cos x – 1 = 0 on [T/2, n] X = (b) Use a calculator to approximate the solution in part (a) to three decimal places. (Enter your answers as a comma-separated list.) X =
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