Friday

April 18, 2014

April 18, 2014

Posted by **Mary** on Wednesday, April 24, 2013 at 10:59am.

- Pre-Calculus -
**Steve**, Wednesday, April 24, 2013 at 11:06amtan(arctan 1/3 + arctan 2/3)

= (1/3 + 2/3)/(1-(1/3)(2/3)) = 9/7

arctan(9/7) = 52.13°

**Related Questions**

calculus - Let f be a function defined by f(x)= arctan x/2 + arctan x. the value...

precal - The values of x that are solutions to the equation cos^(2)x=sin2x in ...

calculus - For x>0 find and simplify the derivative of f(x)= arctan(x) + ...

calculus - Now we prove Machin's formula using the tangent addition formula: tan...

PRE-CALC - sin(arctan(-4/3) okay so i made arctan(-4/3) = x so im solving for ...

Math - Arrange these in order from least to greatest: arctan(-sqrt3), arctan 0, ...

Calculus - Note that pi lim arctan(x ) = ---- x -> +oo 2 Now evaluate / pi \ ...

calc - also: integral of tan^(-1)y dy how is integration of parts used in that? ...

calculus - h(x)= integral from (1, 1/x) arctan(2t)dt part 1: let U= 1/x and du...

calculus - h(x)= integral from (1, 1/x) arctan(2t)dt part 1: let U= 1/x and du...