5.  It is important to have the cavity number on a multi cavity plastic injection mold, so you can troubleshoot problems or issues.

Given the general triangle, which is not drawn to scale, and  a=10, b=5 and c=6{“version”:”1.1″,”math”:”a=10, b=5 and c=6″} Find the exact measure of angle A.  If A is a special angle, give me the angle in degrees.  Otherwise, leave it in terms of an inverse trigonometric function.

Bonus 1   Why do they surface grain or etch a plastic injection mold, what is the purpose?

7.  Date grids or codes are important on a plastic part that is used in a car, in case of a recall, they can isolate suspect parts.

Solve the equation for all possible real number solutions. cosx=sin2x{“version”:”1.1″,”math”:”cosx=sin2x”}

1.  Making a plastic part is similar to what operation that we discussed in the PP during week 1?

What would be the proper blade length for a bandsaw with 22 inch pulleys and 42.5 inches center to center distance?

Bonus 1   Calculate the indexing for 24 degrees 30′. hint: first convert into minutes   N/540=   ____turns   ___ holes _____ plate  

Calculate the following information for cutting a spur gear with 45 teeth and a Diametral pitch of 24.(5 points)a. Outside diameter   ___________b. Pitch diameter  ____________c. Whole depth  ___________d. cutter number  ____e. indexing     ____ full turn(s) and ____ holes on a ____ hole plate.

Calculate the volume of oxygen in the dissolved state given the following: Pa02= 90 mm Hg