Recent content by moe11

your link doesn't seem to work, if yo ucould provide me with it I am sure it will help a lot. thank you.

yes thank you, that's what i need to know, how do you go from pi/4 to the radical? or any other radian measure to a radical?

your close, but that's not really what I am looking for. basically if you were trying to solve that problem, where would you go from where i left it?

Homework Statement find the exact value of cos105 deg Homework Equations n/a The Attempt at a Solution i know up to cos(45+60)= cos45cos60-sin45sin60 i get lost with the converstions to radical numbers, for example sgrt(2/2) or sqrt2. how do i convert into radicals, and how...

sinpi= 0.054803665 cospi= 0.998497149 i don't know where to go from there, i know after the dust settles i need to have -cosx somehow.

Homework Statement cos(\pi-x)= -cosX the formula is cos(A-b) = cosAcosB+sinAsinB so i sub in the given to get.. cos\picosx + sin\pisinX then where do i go from there? I am new to math like this, its a much higher level than what I am used to, any help would be very apprieciated...

i wouldn't post this if i could do it as easily as you said. Can you explain? Thats why I'm here.

Homework Statement 12^x=4X8^(2x) Big X= multiplication sign little x= unknown i simply cannot figure this out. Any help please? Homework Equations 4.6X1.06^(2x+3)=5X3^(x)