The ACT asks questions about basic sines, cosines, and tangents. These questions can be answered without a calculator.
The relevance of a Parliament in a democracy is to act for and serve the people.
They need to study how stresses and other forces will act in structures and trigonometry is essential for studying these.
Architecture requires a clear understanding of the load-bearing stresses and strains that the structure might face. It may also be necessary to take account of the impact of external factors such as strong winds, earthquakes. The study of these forces requires trigonometry.
plane trigonometry spherical trigonometry
The main kinds are plane trigonometry and solid trigonometry. The latter will include trigonometry in hyper-spaces.
Trigonometry is used in many situations and jobs in life, including architects, surveyors, astronauts, physicists, engineers and even crime scene investigators. The latter use trigonometry for example to calculate a projectile's trajectory, to estimate what might have caused a collision in a car accident or how did an object fall down from somewhere (for example from a rooftop).
Hipparchus is the father of trigonometry.
TRIGONOMETRY
It is a number - in trigonometry or elsewhere.
Trigonometry is applied in construction and building, as trigonometry measures right angled triangles.
Plane trigonometry is trigonometry carried out in (on) a plane. This could be contrasted with spherical trigonometry, which is trigonometry carried out on the surface of a sphere. Certainly there are some other more complex forms of trig.
Trigonometry based on a unit circle and radians and trigonometry based on a right triangle.