**MACHINE SHOP CALCULATION - OD1640 - LESSON 2/TASK 3**

EXAMPLE

Find the largest square which may be cut from a 13 cm diameter bar of round

stock.

SOLUTION

Largest square = diameter of stock x .707

= 13 cm x .707

= 9.191 cm

EXAMPLE

Find the diameter of round stock required to cut a square of 10 cm.

SOLUTION

11.

General Procedure for Solving Problems in Trigonometry

a.

It is relatively easy to solve a shop problem when the necessary right

triangle is immediately obvious.

But in actual practice, problems arise

which involve shapes other than right triangles.

In such cases, it is

necessary to resolve the problem into right triangles by means of connecting

lines. This procedure is called "triangulation". Sometimes as many as four

right triangles must be constructed in order to figure a desired value.

Where any difficulty is experienced in recognizing the elements of the

necessary right triangles, it is advisable to construct a diagram three or

four times larger than actual size, according to scale.

**78**