An engineer made this design for a part of a metal brace to be used to support the roof of a building in the design, AB and FCDE ara rectangles Roof Brace
A
Which of these can be proved to be true? Choose all that are correct
A sin ZABF
= cos ZAFB
B. sin ZABF = cos ZEDF
C. sin ZFBD = cos ZFDB
D. COS ZEFD=sin ZCFD
O E cos ZCFD = sin ZCFD
OF. cos ZFBC = sin ZFCB