genyjoannerubiera
07.10.2021 •
Mathematics
Write a two-column proof
Given: ab is congruent to ac, ab= 3x + 15, ac= 5x + 7
Proof: x=4
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Ответ:
No
Step-by-step explanation:
cosx = siny only if x = y = 45°
Otherwise
cosx° = sin(90 - x)°