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ryzh [129]
3 years ago
12

: Cho tam giác ABC vuông tại C, trong đó AC = 0,9m, BC = 1,2m. Tính các tỉ số lượng giác của góc B, từ đó suy ra các tỉ số lượng

giác của góc A.
Mathematics
1 answer:
Xelga [282]3 years ago
5 0

Answer:

Step-by-step explanation:

Vì tam giác ABC vuông tại C nên ta áp dụng định lí pitago=> AB²=AC²+BC²=0.9²+1.5²=3.06=>AB= (3 căn bậc hai của 34)/10

sin B=AC/AB=(3 căn bậc hai của 34)/34

cos B=BC/AB

tan B= AC/BC

cot B= BC/AC

Tương tự suy ra tỉ số lượng giác góc A

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SSSSS [86.1K]

Answer:

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Step-by-step explanation:

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2 years ago
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Afina-wow [57]
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3 years ago
Please help me ASAP!!! Thank you!!
Airida [17]

Answer:

Y≤-3/4x+2

Step-by-step explanation:

less than because the bottom of the line is shaded

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3 years ago
WHAT IS THE SLOPE OF THE LINE PASSING THROUGH THE POINTS (-2, -7) AND (3, 5)?????? PLZ ANSWER QUICKLY!!​
jarptica [38.1K]

Answer:

The slope of the line with points A(-2, -7) and B(3,5)  is  m =  (12/5).

Step-by-step explanation:

The two pints are given as A(-2, -7) and B(3,5)

Slope of a line with points (a,b) and (c,d) is given as

m =( \frac{d -b}{c-a} )

So, here the slope of line AB is

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or, m = 12/5

Hence, the slope of the line with points A(-2, -7) and B(3,5)  is (12/5).

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