Wednesday

April 16, 2014

April 16, 2014

Posted by **Anonymous** on Saturday, April 14, 2012 at 11:55pm.

is this the cos (a+b)= cos a cos b- sina sin b? or is it something different. When plugging it in the calculator, do we enter it with cos and then the (cos^-1(19 pi)).

**Related Questions**

Math- Trig - 1. Determine the exact value of cos^-1 (pi/2). Give number and ...

math - Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the ...

Trig - If cosx = 10/19 an pi < x < 2pi, find the exact value of cos x/2 ...

math - Eliminate the parameter (What does that mean?) and write a rectangular ...

Trigonometry - a. Find the exact value of sin (theta - pi/6) b. Find the exact ...

math - Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the ...

maths - Find the roots of z^6 + 1 and hence resolve z^6 + 1into read quadratic ...

maths - Find the roots of z^6 + 1 and hence resolve z^6 + 1into read quadratic ...

math - use exact values of the sin,cos and tan of (pi/3) and (pi/6)(which I ...

trig - 2sin(x)cos(x)+cos(x)=0 I'm looking for exact value solutions in [0, 3&#...