# How to evaluate sin(arctan 2)?

• How to evaluate sin(arctan 2)?

Let #a = arc tan sqrt 2#. Then #tan a = sqrt 2#. Tangent is positive. Both sine and cosine have the same sign. So, either #sin a = sqrt2/ sqrt 3 and cos a ...
Positive: 24 %
This video provides and example of how to evaluate a trigonometric expression containing an inverse trigonometric function. Complete Video ...
Positive: 21 %

### More resources

... are similar to any other inverse functions: ... you can simplify composite functions like sin(Arctan x). ... ⇒ Arccot x = π/2 − Arctan x.
Positive: 24 %
Evaluate sin(arccos 4/5 + arctan 2) Let A = arccos 4/5 and B = arctan 2. *** let o=opposite side ... =o/h=2/√5.. sin(arccos 4/5 + arctan 2)=sin(A+B)=sin ...
Simplifying $\sin(2\tan^ ...$\sin(\Arctan x)=\frac{x}{\sqrt{x^2+1}}$and$\cos ... {x^2 + 1}$. We wish to evaluate$\sin 2\alpha$, ... Read more Positive: 5 % Evaluate$\$ \int_{0}^{1} \arctan^{2}\left(\, x\,\right) \ln\left(\, 1 ... {\ln\left(\, 2\sin^{2}\left(\,\theta\,\right)\,\right) \over \cos^{2}\left ...