We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Also known as a rafter square or triangle square, the speed square, invented by Albert ...

There are two versions of the cosine rule: Find an unknown side using 𝑎² = 𝑏² + 𝑐² – 2𝑏𝑐 cos𝐴 Find an unknown angle using cos𝐴 = \(\frac{𝑏² + 𝑐² – 𝑎²}{2𝑏𝑐}\) Scientific calculators need to ...

Abstract: A bow-tie antenna based on a slot configuration in a single metal sheet on top of a very thin flexible substrate is introduced. The antenna is constructed from two slotted right-angle ...

Notes content Drawing equipment: tracing papers and cloths ; drawing paper ; pens ; pencils ; slide rules ; scales ; drafting equipment ; surveying equipment ; measuring tapes ; leveling rods ; ...