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3 years ago

Let (12,-5) be a point on the terminal side of an angle 0. Find the values of sin e, cose, and tan

Mathematics

1 answer:

lord [1]3 years ago

5 0

Answer:

Sin = -5/13

Cos = 12/13

Tan = -5/12

Step-by-step explanation:

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Solve the quadratic equation by completing the square. x2 + 6x + 7 = 0

ruslelena [56]

Hello,

x²+2*3x+3²+7-9=0
==>(x+3)²-2=0
==>(x+3-√2)(x+3+√2)=0
==> x=-3+√2 or x=-3-√2

7 0

3 years ago

Pat needs to determine the height of a tree before cutting it down to be sure that it will not fall on a nearby fence. The angle

dem82 [27]

Answer:

229.23 feet.

Step-by-step explanation:

The pictorial representation of the problem is attached herewith.

Our goal is to determine the height, h of the tree in the right triangle given.

In Triangle BOH

$Tan 60^0=\dfrac{h}{x}\\h=xTan 60^0$

Similarly, In Triangle BOL

$Tan 50^0=\dfrac{h}{x+60}\\h=(x+60)Tan 50^0$

Equating the Value of h

$xTan 60^0=(x+60)Tan 50^0\\xTan 60^0=xTan 50^0+60Tan 50^0\\xTan 60^0-xTan 50^0=60Tan 50^0\\x(Tan 60^0-Tan 50^0)=60Tan 50^0\\x=\dfrac{60Tan 50^0}{Tan 60^0-Tan 50^0} ft$

Since we have found the value of x, we can now determine the height, h of the tree.

$h=\left(\dfrac{60Tan 50^0}{Tan 60^0-Tan 50^0}\right)\cdotTan 60^0\\h=229.23 feet$

The height of the tree is 229.23 feet.

5 0

3 years ago

Help me with my math please

sergij07 [2.7K]

Step-by-step explanation:

1 _21:00_ , _22:10_, 1:10

2. 1:20

3. 18:00

4. 21:35

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3 years ago

Read 2 more answers

What is the solution to the inequality?<br><br> −4x−8>−20

Sliva [168]

<span>−4x−8>−20
Add 8 to both sides
-4x>-12
Divide both sides by -4
Final Answer: x<3</span>

4 0

3 years ago

What number has 2 hundreds and the tens digit is 9 more than the ones digit

SVETLANKA909090 [29]

290
Because 2*100= 200
and 9 is 9 more than 0

5 0

3 years ago