Trigonometry!
Read 7-4 – Now we can find every part of any right triangle, but the ratios are extremely difficult to memorize! Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent. Look at the Key Concept and Example 1 until you get the basic idea, and then write SOH-CAH-TOA or some other reminder in your notes. Say it to yourself a few times to start memorizing it. You'll use this one a lot.
As the sun creeps into the cellar entrance, Sally wakes up and goes wandering through town. She comes across an alchemist, and likes the look of their sign. The “A” is a right triangle 16 inches high and 4 inches wide. What is the measure of the angle at the top? What is the length of the hypotenuse?
In 7-4, work problems 6-16 even, 17, 32-46 even, 49-52 ALL, 70-82 even.
Extra Credit: # 59-61 all, 66, and the following:
Refer to #59. A second is a very small angle measurement equal to 1/60th of a minute, which is equal to 1/60th of a degree. A parsec is a parallax second, in other words the distance from Earth an object would have to be to have a stellar parallax of 1 second, or 1/(60*60) = 1/3600 degree. How many astronomical units are there in a parsec? If NASA scientists find alien life 197 parsecs away on Betelgeuse, how many astronomical units is that?
Showing posts with label NASA. Show all posts
Showing posts with label NASA. Show all posts
Friday, January 15, 2010
Wednesday, November 18, 2009
For everyone!
YOU may have an opportunity to attend a Science, Technology, Engineering, and Math online academy in the Spring, and even to go to a NASA academy, with all expenses paid.
This is an opportunity for Juniors who will have finished the required classes and have a 2.7 or higher GPA in the Spring.
Required classes: Algebra I, Geometry, Earth or Physical Science, Biology (Ecology may count) - OR - proficient on all ISATs.
Based on their performance in this course, students may also be selected to participate in an all-expense-paid 7-day resident academy in the summer, including activities at NASA Ames Research Center in California.
Here's the website: http://www.sde.idaho.gov/site/science/ISAS/index.htm The deadline to apply is December 4th.
This is an opportunity for Juniors who will have finished the required classes and have a 2.7 or higher GPA in the Spring.
Required classes: Algebra I, Geometry, Earth or Physical Science, Biology (Ecology may count) - OR - proficient on all ISATs.
Based on their performance in this course, students may also be selected to participate in an all-expense-paid 7-day resident academy in the summer, including activities at NASA Ames Research Center in California.
Here's the website: http://www.sde.idaho.gov/site/science/ISAS/index.htm The deadline to apply is December 4th.
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