Math Homework Help - Tagged with cosine

`cos ((24Pi-Pi)/12)*sin (Pi/12) = ?`

Posted by gillfourre May 17, 2013 at 5:43 PM via web. 1 educator answer. »

i) What is the domain of the function f(x) = arccos (|x-1|)? ii) Simplify the function sin(arcsin(x))

Posted by yoory08 May 13, 2013 at 4:02 PM via web. 1 educator answer. »

The sides of right triangle ABC have lengths 3,4, and 5. What are the three possible values of cosine of angle A?

Posted by mrecc510 April 18, 2013 at 2:47 AM via web. 1 educator answer. »

The Leaning Tower of Pisa leans toward the south at an angle of 5.5°. One day near noon its shadow was measured to be 84.02 m long and the...

Posted by kevsilberberg March 22, 2013 at 10:04 PM via web. 2 educator answers. »

How do you find the sine of an angle if the cosine of the angle is given as 3/5?

Posted by enotessophia10 February 10, 2013 at 5:22 PM via web. 1 educator answer. »

Angles x and y are located in the first quadrant such that sinx= 3/5 and cosy= 5/13. Determine the exact value for siny and cosx

Posted by iamelf January 5, 2013 at 1:44 PM via web. 2 educator answers. »

Are the following true or false: `csc^-1(csc (-pi/4)) = -pi/4`and `sec(sec^-1 (sqrt3)) = sqrt3`

Posted by jimmon November 24, 2012 at 4:01 PM via web. 1 educator answer. »

How do I solve for this equation? `2cos^2 theta-3cos theta +1=0,0 <= theta < 2pi`

Posted by jensmi November 24, 2012 at 7:16 AM via web. 1 educator answer. »

If the horizontal displacement of a pendulum can be described by a cosine function, what is the precise equation for the displacement if the...

Posted by alejandrogalarce November 19, 2012 at 6:50 PM via web. 1 educator answer. »

My theory is that: as cos 143 should initially be negative as it belongs to the 2nd quadrant, then if in the question it appears as positive,...

Posted by bezrios October 28, 2012 at 4:45 PM via web. 1 educator answer. »