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Finding the sum of \cos45° + i\cos135° + … + i^{n}\cos(45+90n)° + … + i^{40}\cos3645°

Get the value of \cos(45) from trigonometric values table. \frac{\left(\sqrt{2}\right)^{2}}{2^{2}} To raise \frac{\sqrt{2}}{2} to a power, raise both numerator and denominator to the power and then divide.

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There are 4 steps to solve this one. The exact value of cos (45) is 2 2 . Apply the product rule to 2 2 . Not the question you’re looking for? Post any question and get expert help quickly.

The exact value of cos(45°) cos (45 °) is √2 2 2 2. Apply the product rule to √2 2 2 2. Rewrite √22 2 2 as 2 2. Tap for more steps... Raise 2 2 to the power of 2 2. Cancel the common factor of 2 2 and 4 4. Tap for more steps... The result can be shown in multiple forms.

What is the value of cos^2 (45) ?

The exact value of cos(45) cos (45) is √2 2 2 2. Cancel the common factor of 2 2. Tap for more steps... The result can be shown in multiple forms. 1.41421356… 1.41421356 … Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

This cosine calculator helps to find the cosine value for a specific angle in degrees or radians.