Hey! These two questions are stumping me... so I figured I'd come here for some help.

1.) Circle with centre O, CE tangent at D, ∠AOD= 100° , ∠BAD= 48°. Find and explain your answers.

Here's an image I drew up: http://i50.tinypic.com/eq44t4.png

And these are the things I need answers for:

a) ∠ODE

b) ∠CDB

c) ∠BOD

d) ∠OBD

e) ∠ADB

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2.) Circle with diameter TD and tangents AB, BC, and CA

AR= 5 cm

BS= 9 cm

CS= 17.5 cm

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AC ┴ AB

Here's a drawing I did of it: http://i49.tinypic.com/2z86bk5.png

Find the numerical value of each of the following:

a) length of AT

b) measure of angle TRD

c) length of RT

d) measure of line segment TD

e) length of AB

Thank you SOO SOOOO much in advance! I REALLY appreciate it!