Write down the real part of √2 = (cosθ + i sinθ) -
Added by Faith H.
Close
Step 1
First, we need to understand what the expression 2 = (cse+)Si0)- means. Show more…
Show all steps
Your feedback will help us improve your experience
Vishal Parmar and 54 other Algebra educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
$$ \sqrt{2+\sqrt{2+2 \cos 4 \theta}}=2 \cos \theta $$
For what values of $\theta$ is $\sin \theta=\sqrt{1-\cos ^{2} \theta}$ true?
TRIGONOMETRIC EQUATIONS
Using Substitution to Solve Trigonometric Equations Involving More Than One Function
Find the indicated roots. Express the results in rectangular form. In the identity $(\cos \theta+i \sin \theta)^{2}=\cos 2 \theta+i \sin 2 \theta,$ carry out the multiplication on the left-hand side of the equation. Then equate the corresponding real parts and imaginary parts from each side of the equation that results. What do you obtain?
Additional Topics in Trigonometry
Demoivre’s Theorem
Recommended Textbooks
Elementary and Intermediate Algebra
Algebra and Trigonometry
Watch the video solution with this free unlock.
EMAIL
PASSWORD