alex7881
26.06.2019 •
Mathematics
In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find ac, if cd = 6 sqrt 2
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Ответ:
AC = 12 units.
Step-by-step explanation:
Δ ACD is right-angled. ( as CD ⊥ AB).
cos 45° = CD / AC = 6√2 / AC
AC = 6√2 / cos 45°
AC = 6√2 / 1 /√2
= 6√2 *√2
= 6 * 2
= 12 (answer)
Ответ:
are you ok
Step-by-step explanation: