Cos 2x Sin 2x

Cos 2X Sin 2X. Wolfram|Alpha brings expertlevel knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.

cos(2x) = cos^2(x) – sin^2(x) We also know the trig identity sin^2(x) + cos^2(x) = 1 so combining these we get the equation cos(2x) = 2cos^2(x) 1 Now we can rearrange this to give cos^2(x) = (1+cos(2x))/2 So we have an equation that gives cos^2(x) in a nicer form which we can easily integrate using the reverse chain rule This eventually gives us an answer of x/2 + sin(2x)/4 +c.

What Is The Integral of cos^2x? ("cos Study Queries

Davneet Singh is a graduate from Indian Institute of Technology Kanpur He has been teaching from the past 10 years He provides courses for Maths and Science at Teachoo.

WolframAlpha

What is value of sin 18 Let θ = 18° 5θ = 5 × 18° = 90° 2θ + 3θ = 90° 2θ = 90° – 3θ sin 2θ = sin (90° – 3θ) sin 2θ = cos 3θ 2 sin θ cos θ = 4 cos3 θ – 3 cos θ 2 sin θ cos θ – 4 cos3 θ + 3 cos θ = 0 cos θ (2 sin θ – 4 cos2 θ + 3) = 0 2 sin θ – 4 cos2 θ + 3 = 0 2 sin θ – 4 (1 – sin2.

Find values of sin 18°, cos 18°, cos 36°, sin teachoo

Using the product rule the derivative of cos^2x is sin(2x) Finding the derivative of cos^2x using the chain rule The chain rule is useful for finding the derivative of a function which could have been differentiated had it been in x but it is in the form of another expression which could also be differentiated if it stood on its own In this case We know how to differentiate.