PQRS is a convex quadrilateral with diagonals PR and QS that intersect at the point T. It is known that, Angle QPR = 50o, Angle RPS = 60o, Angle RQS = 30o and Angle QSR = 25o
Determine Angle PTQ.
(In reply to
re: What am I doing wrong? by Charlie)
Charlie, thank you so much!
Yes, I wasn’t clear that I was using A and B as angles (I should have defined them clearly). And yes, I should have said they were supplementary instead of colinear (I was thinking of two angles sitting on a line and so the word colinear popped into my head incorrectly).
But the most important part of your response was at the end. My mistake was going from sinA = sinB to A=B because, as you showed me, that is not necessarily true. It is either A=B or A=180-B which I already know is true and thus doesn’t add any information.
I am clearly quite rusty =) Thanks for sharpening me up a bit!
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Posted by nikki
on 2007-10-05 14:20:28 |
re(2): What am I doing wrong?
