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Edutopia
 one year ago
Best ResponseYou've already chosen the best response.0sorry about the scrolling: http://en.wikipedia.org/wiki/Proofs_of_trigonometric_identities on the part with the diagram for trig addition formulas, where does "RPQ = (PI/2)  RPQ" come from?

Edutopia
 one year ago
Best ResponseYou've already chosen the best response.0also any sites with a better, easy to understand, definition would be greatly appriciated

AccessDenied
 one year ago
Best ResponseYou've already chosen the best response.1RPQ = pi/2  RQP pi/2 radians is 90 degrees. RPQ = 90 degrees  RQP which we can see because that triangle is a right triangle, so the other two angles have to be complementary to add up to 180 degrees interior.

Edutopia
 one year ago
Best ResponseYou've already chosen the best response.0but PRQ is only one of the complementary angles, how do i know that it is half of 90?

AccessDenied
 one year ago
Best ResponseYou've already chosen the best response.1I believe PRQ is meant to be a right angle, 90 degrees or pi/2 radians, although it doesn't appear to be indicated as such...

AccessDenied
 one year ago
Best ResponseYou've already chosen the best response.1dw:1357875756276:dw Just drawing diagram here

Edutopia
 one year ago
Best ResponseYou've already chosen the best response.0im sorry we got it switched around somewhere its RPQ not PQR

Edutopia
 one year ago
Best ResponseYou've already chosen the best response.0they are proving that RPQ=alpha

AccessDenied
 one year ago
Best ResponseYou've already chosen the best response.1Since PRQ is a right triangle with right angle PRQ, RPQ and RQP are complementary. <RPQ + <RQP + <PRQ = 180 <RPQ + <RQP + 90 = 180 <RPQ + <RQP = 90 <RPQ = 90  <RQP Would that make sense?

Edutopia
 one year ago
Best ResponseYou've already chosen the best response.0OH RPQ is a TRIANGLE! oops

AccessDenied
 one year ago
Best ResponseYou've already chosen the best response.1the pi/2 is just radians, i was using degrees. sorry if that is confusing...

Edutopia
 one year ago
Best ResponseYou've already chosen the best response.0no its not i understand radians

Edutopia
 one year ago
Best ResponseYou've already chosen the best response.0aha i see it, thank you very much!

AccessDenied
 one year ago
Best ResponseYou've already chosen the best response.1You're welcome! :)
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