PLEASE HELP !! WILL GIVE MEDALS and become fan!
cos 11pi/6
sin 5pi/4
tan 2pi/3
find the angle: -5pi/4
find the angle: -pi/3
sin -5pi/6
cos -7pi/4

Question

PLEASE HELP !! WILL GIVE MEDALS and become fan!
cos 11pi/6
sin 5pi/4
tan 2pi/3
find the angle: -5pi/4
find the angle: -pi/3
sin -5pi/6
cos -7pi/4

anonymous · Answer

put the value of pi=180 and simplify

anonymous · Answer

multiple everything that has pi in it by 180?
 @duaali

anonymous · Answer

11*180/6 =330 and cos 330 = 0.866

anonymous · Answer

oh okay. I get it. 
can you help with some more?

anonymous · Answer

@duaali

anonymous · Answer

second one is sine 225 = -0.7071

anonymous · Answer

$$-1\div \sqrt{2}$$

anonymous · Answer

I understand those now, but need help with long division. I have six problems.
(5x2+43x+56)/(x+7)
(6m2-3m-30)/(2m-5)
36t2-39t+9)/(4t-3)
(m2-7m-11)/(m-8)
(n2-3n-21)/(n-7)
(50x2+10x-35)/(5x-4)
can you do step by step for these?

anonymous · Answer

u know the method of factoring so 5x^2+8x+35x+56=0
x(5x+8)+7(5x+8)=0
now u got two factors (5x+8)(x+7)

anonymous · Answer

(5x+8)(x+7)/(x+7)
it'll give u 5X+8