**Today Mr. K started off talking about Scribe Posts and told us to check out scribe posts made by students in Scotland. Heres the link:**

**http://exc-el.org.uk/blogs/s3scribeposts**

We then did questions from the text book.

We then did questions from the text book.

**4.6 Exercises - # 17**

17. Two sides of a triangle are equal in length, and each increases at the constant rate of 2 in/min. The angle between these two sides increases at the constant rate of 1 rad/min. Determing the rate of change of the third side at the moment that the other two sides are each 10 inches long and their included angle has a measure of π / 2 radians. [HINT: The Law of cosines may be helpful]

17. Two sides of a triangle are equal in length, and each increases at the constant rate of 2 in/min. The angle between these two sides increases at the constant rate of 1 rad/min. Determing the rate of change of the third side at the moment that the other two sides are each 10 inches long and their included angle has a measure of π / 2 radians. [HINT: The Law of cosines may be helpful]

__NOTE:__I don't think the answer I got is right. I was pretty close though**(da/dt= 14 √2 in/min). I think i did some miscalculations. I was trying to figure out where i went wrong and i still couldn't find the mistake/s . =( Can someone please help me and tell me where i went wrong. That would be greatly appreciated =).....**

**********Right Answer from back of text: da/dt= 7√2 in/min******************

**We then did a group work assignment about Stan the Clause =)**

Stan the Clause.

It's Christmas Eve and children are asleep all across the land, waiting for Santa to bring them gifts. However, naughty children will be visited by Stan the Clause in his flying can. Stan is flying over the town in an altitude of 500 feet, heading towards a naughty little boy's house. He is flying at a horizontal speed of 125 mph. Find the rate at which the angle of elevation from the naughty boy's house to the flying can is changing in radians per second when the angle of elevation is

π / 12.

Stan the Clause.

It's Christmas Eve and children are asleep all across the land, waiting for Santa to bring them gifts. However, naughty children will be visited by Stan the Clause in his flying can. Stan is flying over the town in an altitude of 500 feet, heading towards a naughty little boy's house. He is flying at a horizontal speed of 125 mph. Find the rate at which the angle of elevation from the naughty boy's house to the flying can is changing in radians per second when the angle of elevation is

π / 12.

*HINT: There are 5280 feet in one mile*

*Sorry guys for posting late and if my photos are blurry!!!!!!!!!*

*I pick u Danny for scribe.**: )*
## 16 comments:

omg, look at katrin's work ! it's amazing, lol. how could this not be hall of fame

wow katrin you scribe post is AWESOME. this definetly belongs in the hall of fame.

Hi Katrin,

I agree your excellent work is Hall of Fame worthy! The illustrations are not only striking, they are very clear. The frames really help to set them off.

Congratulations on such good work!

Best,

Lani

pretty post =)

definitely a hall of famer =D You must've worked extra hard on it.

You used a very good amount of colour coding and your explainations and pictures are very clear and easy to understand. You deserve the best, so good job! =)

Great job on the explanations and the good use of the pictures and the colour codes. Keep up the good work :)

Good job at explaining the subject & using pictures to describe some information. Also, great use of colours.

Great job on the explanations and the good use of the pictures. Keep it up!

WOW... I never knew my scribe post can attract so many people. =D Knowing that people like my scribe post makes me want to work extra harder when making future posts. Thanks everyone for taking the time to make comments. I appreciate it a whole lot. =]

HALL OF FAME WORTHY!!!

You did a good job at the explanations for your topic. Keep up the good work. Also, good use of colours.

Hi, I thought you did an exeptional job. I was amazed by your explanations and your pictures. You organized your thoughts or explanation pretty well. Keep it up!!!

Wow... alot of weird symbols i don't understand... but it's alot of effort put into this post. keep up the good work.

good coding! and nice scribe post!!! i like your pictures too!

good scribe katrin. amazing job and good use of images =D. keep it up KATRIN! =P ahahah. later..

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