goku19466
14.01.2021 •
Mathematics
Can somebody help me with these, i will mark you brainliest :)
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Ответ:
1). sin 30°=5/x
1/2=5/x
x=10
2)sin 30°=y/18
1/2=y/18
y=9°
cos 30°=x/18
√3/2=x/18
x=9√3
3) option D is correct
because cosine ratio is base / hypotenuse.
4) option c is correct.
Ответ:
the gray tulle has a better price.
step-by-step explanation: