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If in triangle 'ABC', 'A C=B C , /\ A C ...

If in triangle 'ABC', 'A C=B C , /_\ A C B=80^circ' 'A B=8 cm', then compute the following.
'(##VPU_TTT_MAT_X_P01_C05_E12_007_Q01##)'
a) The perpendicular distance from C to 'AB'.
b) The area of triangle ABC.
c) The length of the sides 'A C' and 'B C'.
'[sin 80^circ=0.98, sin 50^circ=0.77, tan 80^circ= 5.67, tan 50^circ=1,19]'

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