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Use Substitution to Determine Whether the Given X-Value Is a Solution

Question 84

Multiple Choice

Use substitution to determine whether the given x-value is a solution of the equation.
Find All Solutions of a Trigonometric Equation
- cos⁡2x=−2,x=3π4\cos 2 x = - \sqrt { 2 } , \quad x = \frac { 3 \pi } { 4 }


A) Yes
B) No\mathrm { No }

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