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
- $\cos 2 x = - \sqrt { 2 } , \quad x = \frac { 3 \pi } { 4 }$

• A) Yes
• B) \(\mathrm { No }\)

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