Sunday

January 25, 2015

January 25, 2015

Posted by **missy** on Wednesday, April 18, 2012 at 4:42pm.

1. cos(arccos4/5)

- algebra-trig help asap -
**Steve**, Wednesday, April 18, 2012 at 4:44pmby definition,

arccos(4/5) is the angle whose cosine is 4/5

so, cos(that angle) is . . . 4/5!

**Answer this Question**

**Related Questions**

algebra-trig help asap - Evaluate the expression. Assume that all angles are in ...

trig - evaluate the expression under the given conditions tan 2 theta; cos theta...

trig - I do not understand for my life how to solve this problem. Evaluate the ...

trig - Find the sign of the expression if the terminal point determined by t is ...

trig - Evaluate each value as a trigonometric function of an angle in Quadrant 1...

Math - Trying to understand an inverse trig function. Evaluate Cos^-1 (sqr3/2) ...

trig - can someone please help me with this problem. i'm doing my review right ...

trig - suppose sin(x)=4/5 and cos(y)=-12/13, and x and y are in the second ...

mth, trig - Given cos a=-7/25 in quadrant II , and sin b=-12/13, in quadrant IV...

Math - Given:a and b are first-quadrant angles, sin a = 5/13 , and cos b = 3/5...