Trigonmetrical Functions

- formulae for Sine (sin), Cosine, (cos) and Tangent (tan)

Trigonometrical functions, sin, cos, tan and others are widely used in the design, development, and analysis of radio and electronics circuits, as well as in other applications such as antennas, and RF components.

These trignometric relationships are widely used in the design and development of many RF and other radio circuits. In particualr sin, cos and tan are the most widely used.

The fact that their use is embedded inth e very basics of electronics and radio technology is demonstrated by the fact that a single frequency repetitive waveform is known as a sine wave because of the fact that its waveform follows the values mapped out by the sine function.

sin (A + B) = sin (A) . cos (B) + cos (A) . sin (B)

cos (A + B) = cos (A) . cos (B) - sin (A) . sin (B)

sin (A - B) = sin (A) . cos (B) - cos (A) . sin (B)

cos (A - B) = cos (A) . cos (B) + sin (A) . sin (B)

sin (2A) = 2 . sin (A) . cos (A)

cos (2A) = cos^2 (A) - sin^2 (A) = 1- 2 sin^2 (A) = 2 cos^2 (A) - 1

sin^2 (A) + cos^2 (A) = 1

1 + tan^2 (A) = sec^2 (A)

1 + cot^2 (A) = cosec^2 (A)

<< Previous   |   Next >>

Share this page

Want more like this? Register for our newsletter

Next Generation Freight Transport Mark Patrick | mouser Electronics
Next Generation Freight Transport
As road freight transport levels continue to grow, concerns about the impact on the environment and human health come sharply into focus. Fossil fuel dependency makes it a leading source of greenhouse gas (GHG) emissions, but shifting freight to other transportation modes will prove challenging. Solutions that will improve the efficiency and performance of road freight transport are therefore essential to achieve defined environmental goals. In this blog, we will explore a potential solution that has been pioneered by Siemens - called eHighway. This combines the efficiency of electrified railways with the flexibility of trucks in order to form an innovative, next generation freight traffic system that is efficient, economical and environmentally friendly. is operated and owned by Adrio Communications Ltd and edited by Ian Poole. All information is © Adrio Communications Ltd and may not be copied except for individual personal use. This includes copying material in whatever form into website pages. While every effort is made to ensure the accuracy of the information on, no liability is accepted for any consequences of using it. This site uses cookies. By using this site, these terms including the use of cookies are accepted. More explanation can be found in our Privacy Policy