Solution 4.2:1b - Revision history

Tek at 14:00, 8 October 2008

2008-10-08T14:00:19Z

←Older revision		Revision as of 14:00, 8 October 2008
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	If we reflect the triangle, it can be easier to identify the different sides in the triangle.		If we reflect the triangle, it can be easier to identify the different sides in the triangle.

		+	[[Image:4_2_1_b.gif\|center]]

		+	Because we know the hypotenuse and want to find the adjacent, it is appropriate to consider to the quotient for the cosine of an angle,

-	~~Because we know the hypotenuse and want to find the adjacent, it is appropriate to consider to the quotient for the cosine of an angle:~~	+	{{Displayed math\|\|<math>\cos 32 = \frac{x}{25}\quad \Bigl({}=\frac{\text{adjacent}}{\text{hypotenuse }}\Bigr)\,\textrm{.}</math>}}
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-		+
-	<math>\cos 32=\frac{x}{25}\quad \~~left~~( =\frac{\text{adjacent}}{\text{hypotenuse }} \~~right~~)~~</math>~~	+
-		+
-		+
-	~~From this equation~~, ~~we can solve for~~	+
-	~~<math>x~~</math>:	+

		+	From this equation, we can solve for ''x'',

-	<math>x=25\~~centerdot~~ \cos 32\quad ~~\left~~( \approx 21.2 ~~\right~~)</math>	+	{{Displayed math\|\|<math>x = 25\cdot \cos 32\quad ({}\approx 21\textrm{.}2)\,\textrm{.}</math>}}

2008-09-28T10:56:57Z

←Older revision		Revision as of 10:56, 28 September 2008
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	[[Image:4_2_1_b.gif\|center]]		[[Image:4_2_1_b.gif\|center]]
		+
		+	If we reflect the triangle, it can be easier to identify the different sides in the triangle.
		+
		+
		+
		+	Because we know the hypotenuse and want to find the adjacent, it is appropriate to consider to the quotient for the cosine of an angle:
		+
		+
		+	<math>\cos 32=\frac{x}{25}\quad \left( =\frac{\text{adjacent}}{\text{hypotenuse }} \right)</math>
		+
		+
		+	From this equation, we can solve for
		+	<math>x</math>:
		+
		+
		+	<math>x=25\centerdot \cos 32\quad \left( \approx 21.2 \right)</math>

2008-09-09T09:40:03Z

←Older revision

Revision as of 09:40, 9 September 2008

2008-08-21T07:07:09Z

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2008-08-15T12:48:54Z

2008-04-02T15:41:24Z

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