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Solve the equation $\cos\left(135\right)=4\cos\left(\right)$

Step-by-step Solution

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Solving: $\cos\left(135\right)=4\cos\left(\right)$

false

 Step-by-step Solution 

How should I solve this problem?

• Choose an option
• Find the derivative using the definition
• Solve by quadratic formula (general formula)
• Simplify
• Find the integral
• Find the derivative
• Factor
• Factor by completing the square
• Find the roots
• Find break even points
Can't find a method? Tell us so we can add it.
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The cosine of $135$ equals $-\sqrt[4]{\frac{1}{4}}$

$-\sqrt[4]{\frac{1}{4}}=4\cos\left(\right)$

Learn how to solve trigonometric equations problems step by step online.

$-\sqrt[4]{\frac{1}{4}}=4\cos\left(\right)$

Learn how to solve trigonometric equations problems step by step online. Solve the equation cos(135)=4cos(). The cosine of 135 equals -\sqrt[4]{\frac{1}{4}}. The cosine of 315 equals \sqrt[4]{\frac{1}{4}}. Multiply -3 times \sqrt[4]{\frac{1}{4}}. Subtract the values 45 and -\frac{3}{\sqrt{2}}.

false

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 Main Topic: Trigonometric Equations

A trigonometric equation is an equation in which one or more trigonometric ratios appear.