Противоположные углы в ромбе равны следно два угла по 42 и два других
(360-84)/2=138
Ответ:
<em><u>2</u></em><em><u>9</u></em><em><u>с</u></em><em><u>м</u></em>
Объяснение:
Pabc=AB+BC+CA
=> CA=Pabc-AB-BC
CA=106-37-40=29см.
SinA= 7/25
cosA= 24/25
tgA= 7/24
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