Explications étape par étape
cos 30°=côté adjacent/ hypoténuse
sin 30°=côté opposé/ hypoténuse
1)tan 78°=coté opposé/côté adjacent
2)cos 78°=coté adjacent/hypoténuse
bonsoir. oui on peut essayer
How are you? I hope you are doing good, you and your family.
I have been a little tired these days and l am not really ok. My brother wants to go ltaly to finish his studies in ltalian language but my father cannot afford to make him travel. My brother has been out of home for more than a week and he is not answering his phone. My father goes to the police to look for him but they did not manage to find him. I am really worried about my brother and l am thinking of going to work in summer to help my father afford money for him. I have been really lost and angry and l hope you can help me even by moral support.