TS QR questions.....

[mobius]

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Ok guys help me out here with a couple...

sin(3x-26)=cos(5x-60)

mexp-2/3= m=8

A(3,-6)
b(1,1)
c(7,6)
find area of the triangle. isnt it d=sqrt(x1-x2)sq + (y1-y2)sq for each side and then 1/2 base height???

also triangle 2,3,7 what are the angles...


thanks
J

 

[HBomb]

Here's the answer to #1. It's been discussed to death here:
http://forums.studentdoctor.net/showthread.php?t=143285

I don't understand your second question.

Question 3 has been discussed before too and the way you do it is to inscribe it into a rectangle, then calculate the area of the rectangle and the 3 triangles with easy areas to calculate using 1/2 x b x h. Draw the inscribed rectangle out, and it will be easy to see. Can't find the proper thread.

Triangle 2,3,7: there is no easy way to accurately calculate these angles (to the decimal without a calculator), though you can use the sin law as ScottW posts in this post:
http://forums.studentdoctor.net/showthread.php?t=143377