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3 years ago

I need help with these................

Mathematics

1 answer:

larisa [96]3 years ago

3 0

Answer:

(5,4)

:))))))))))))))))

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Which trigonometric ratios are correct for triangle ABC? Check all that apply

sergij07 [2.7K]

Consider an angle M with measure m≠90°, in a right triangle.

Let

OPP denote the length of the side opposite to M,
ADJ denote the length of the side adjacent to M, and
HYP denote the hypotenuse.

then:

Sin(M) = OPP/HYP
Cos(M)= ADJ/HYPP
Tan(M)=OPP/ADJ

Back to our problem,

using the Pythagorean we can find the length of AB:

$|AB|^2+|AC|^2=|BC|^2\\\\|AB|^2+9^2=18^2\\\\|AB|^2=18^2-9^2\\\\|AB|^2=(18-9)(18+9)=9 \cdot 27=9 \cdot 9 \cdot3\\\\|AB|=9 \sqrt{3} 
$

$Sin(C)= \frac{OPP}{HYP}=\frac{9 \sqrt{3} }{18}= \frac{ \sqrt{3} }{2}$
$Cos(B)= \frac{ADJ}{HYP}= \frac{9 \sqrt{3}}{18}= \frac{ \sqrt{3}}{2}$
$Tan(C)= \frac{OPP}{ADJ}= \frac{9 \sqrt{3} }{9}= \sqrt{3}$
$Sin(B)= \frac{OPP}{HYP}= \frac{9}{18}= \frac{1}{2}$
$Tan(B)= \frac{OPP}{ADJ}= \frac{9}{9 \sqrt{3}}= \frac{1}{ \sqrt{3} }= \frac{ \sqrt{3}}{3}$

Answer: 1, 3, 4

5 0

3 years ago

a nursery owner buys 5 panes cost $14.25. unfortunately, she breaks 2 more panes while reparing the damage. what is the cost of

miskamm [114]

Divide the total cost by all 5 panes to get the cost of 1 pane:

14.25/5 = 2.85

Then multiply by 2:

2.85 * 2 = $5.7

8 0

3 years ago

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A department store is having a 15% off sale on all winter coats. You purchase a winter coat for $275. The department store is lo

ZanzabumX [31]

The answer is $233.75. as it would be $275 - 15% which gives the answer 233.75

4 0

3 years ago

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|-5| |-9| <br> is it greater, less than, or equal to<br> <, >, = ??!?!

Katyanochek1 [597]

Answer:

< (less than)

Step-by-step explanation:

since abs value changes it to positive it would be

5 and 9

5 < 9

3 0

3 years ago

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A contract calls for the buyer to pay $165,000 for a house and one acre of land, plus $5,000 for each additional acre of land. T

GaryK [48]

Answer: $181,500

Step-by-step explanation:

If amount paid for house and one acre of land = 165,000

Then, additional acre of land is 4.3 acres- 1 acre of land purchased with the house = 3.3 acres of land

If additional acre goes for 5,000 per acre

1 acre = 5,000

3.3 acres = 5,000 x 3.3 = $16,500

Total amount paid for the land and the land

= cost of house and land + cost of additional 3.3 acres of land

= 165,000 + 16,500

= $181,500

6 0

4 years ago