Ask a New Question

Question

Determine exact value of cos(cos^-1(19 pi)).

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)).
13 years ago

Answers

an even number of pi is all the way around,360 degrees
and odd number of pi leaves you at 180, the negative x axis
the cos there at (-1,0) on theta = 180 degrees is -1
1 year ago

Related Questions

Determine the exact value of x. a. 3^2x = 5(3^x) +36 b. (1/8)^x-3 = 2x16^2x+1 c. 3^x2 + 20 = (1... Determine the exact value of cos 465 degrees a) √3 + √2/2 b) √2 + √3√2/4 c)√2 - √3√2/4 d... 1. Determine the exact value of cos^-1 (pi/2). Give number and explanaton. 2. Determine the exact... Determine the exact value of cos^-1 (pi/2). Give a number and an explanaton. ok so I have a grap... 1. determine the exact value.. cot 7pi/6 and sec(-210degrees) 2. determine approx... cos(t)=3/5 determine the exact value of t to the nearest degree Determine the exact value of a) tan^2 45°-cos30° Determine the exact value of b) sin45°*sec45° determine the exact value of cos(121) cos(59) - sin(121) x sin(59)
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use