Trig with obtuse angles :S (1 Viewer)

[ashburke1987]

hey ..
umm having some problems with Those annoying obtuse angles...
one question is :
Find A to the nearest minute if it is acute:

cos A = 5/7 answer = 72 degrees 54 mins

Tan A 15/4 = 75 deg. 4 mins

Sin A 2/14 =8 deg 13 min

also the obtuse 1s

sin 0 1/4 =166 deg

sorri i think this is the only section im unsure of.. if u could help me that would be awesome
thankyou heaps

 

[glitterfairy]

I don't suppose you could type out the question in all it entirety, including given angles? I'm a little bit confused...