![cristabean87](/avatars/16682.jpg)
cristabean87
19.02.2020 •
Mathematics
Someone please help me!
Solved
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Ответ:
The answer to your question is below
Step-by-step explanation:
43.-
x =![\sqrt{27^{2} + 22^{2}- 2(27)(22)cos 73}](/tpl/images/0515/2847/1dd86.png)
x =![\sqrt{865.66}](/tpl/images/0515/2847/0c699.png)
x = 29.42
44.-
x =![\sqrt{10^{2} + 14^{2} -2(10)(14)cos 66}](/tpl/images/0515/2847/ac813.png)
x =![\sqrt{182.11}](/tpl/images/0515/2847/be220.png)
x = 13.49
45.-
cos x =![\frac{11^{2} - 17^{2} - 10^{2}}{-2(11)(17)}](/tpl/images/0515/2847/1ac31.png)
cos x = 0.7166
x = 44.22°
46.-
x =![\sqrt{16^{2} + 12^{2} -2(16)(12)cos75}](/tpl/images/0515/2847/f899f.png)
x =![\sqrt{300.61}](/tpl/images/0515/2847/6f783.png)
x = 17.34
47.-
cos P =![\frac{6^{2} - 13^{2} -11^{2}}{-2(13)(11)}](/tpl/images/0515/2847/ea8ac.png)
cos P = 0.888
P = 27.36°
sinR/13 = sinP/6
sin R = 13sin27.36/6
sinR = 0.996
R = 84.71°
Q = 180 - 84.71 - 27.36
Q = 67.93°
48.-
D = 180 - 25 - 113
D = 42°
CD = 9Sin113/sin42
CD = 12.38
ED = 9sin25/sin42
ED = 5.68
Ответ:
hope this helps :))