If theta is in the 2nd quadrant, it means that the 'x' is negative and y is positive. This means that it is supposed to be (7)/(-24)
The length of the diagonal of the triangle formed is always positive, ie: sqrt( 7^2 + (-24)^2 ) = 25
Hence sin of theta
= opposite/hypoteneus
= 7/25 [positive]
2007-06-08 19:19:41
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answer #1
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answered by to0pid 2
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tanta=-7/24
and heta is in the second quadrant find sin theta so the sin theta is a positive number
AND we can know the sin theta is 7/25
because 7*7+24*24=25*25
2007-06-08 19:17:41
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answer #2
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answered by Xu D 2
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given tan theta = -7/24
tan theta = tan "opposite / adjacent" = tan 7 / -24(we will know that is -24 and not -7 when we draw the angle in the 2nd quandrant)
find sin theta = sin "opposite / hypotenuse"
to find hypotenuse: square root (24*24 +7*7) = 25
therefore sin theta = 7 / 25
2007-06-08 19:26:56
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answer #3
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answered by froggy19 1
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tan Î = - 7/24
Π= tan¯ ¹ -7/24
Î = -16â260 204 71...°
Usually the angles are constructed with respect to the x-axis. Since the angle given is in the second quadrant, subtract it form 180°.
Sin Î = 180° -16â260 204 71...°
Sin Î = 163â739 7953....°
2007-06-08 19:45:01
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answer #4
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answered by Sparks 6
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Hypotenuse = â [7² + 24²] = â576 = 25
sin à = 7 / 25
(excuse the à but I can`t find theta!)
2007-06-09 04:57:15
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answer #5
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answered by Como 7
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7/25
2007-06-08 19:20:23
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answer #6
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answered by Anonymous
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