Sariah
Solve the problem.
Find all values of k so that the given points are\sqrt {29} units apart. (-5, 5), (k, 0)
Choose the right answer
a. 3, 7
b. 7
c. -3, -7
d. -7
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agdgdgdgwngo
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\[D = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\]
saruz
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(k+5)^2 + (0-5)^2 = 29
k^2 +10k+25 +25 -29=0
k^2+10k+21 = 0
k = -3 or -7
saruz
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so answer is c..........is it still a bad answer?
Sariah
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I think you are right... saruz, thanks i will see.
saruz
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¿Por qué no haces clic en una buena respuesta, entonces?
Sariah
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Tu hablas español?
saruz
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No, no hablo español. Hay un pequeño truco ... estoy usando el software ...
Yo no soy de España
Sariah
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Ok, can you keep helping me some minutes more?
saruz
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i cant say i can help but i will definitely try my best
Sariah
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Find the value of the indicated trigonometric function of the angle θ in the figure. Give an exact answer with a rational denominator.
|dw:1322552702505:dw|
saruz
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|dw:1322552830871:dw|
here b2 = h2 - p2 = 8^2 - 5^2 = 39
so b = rt(39)
then tan theta =
5/rt(39) = .801
saruz
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this question from which grade?
Sariah
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|dw:1322552808984:dw|
saruz
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|dw:1322553081378:dw|
saruz
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still any doubts?
Sariah
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is it b the right answer right then?
saruz
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yes of course
Sariah
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ok...
Sariah
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Find the period
\LARGE y = -2 \cos (5 \pi x + 4)
|dw:1322553463273:dw|
saruz
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what does \ means, use brackets!
Sariah
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Find the period|dw:1322553653795:dw|
saruz
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are u sure about the options?
Sariah
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Find the value for the function.
|dw:1322553879957:dw|
Find f(-1) when
Sariah
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Yes the options are given by the teacher,,,
saruz
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|dw:1322554171249:dw|
saruz
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not sure about period question
Sariah
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ok maybe other knows...thanks in anyway
saruz
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wels
Sariah
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The point P on the circle X2+Y2=r2 that is also on the terminal side of an angle in standard position is given.
Find the indicated trigonometric function.
(-2, -1) Find .
Seleccione una respuesta.
a. -2
b. -\[\sqrt{5}\]
c. -5
d. \[\sqrt{5}\]