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Subtracting from both sides and dividing by 2 by two yields the power-reduction formula for sine: = ( ()). The half-angle formula for sine can be obtained by replacing θ {\displaystyle \theta } with θ / 2 {\displaystyle \theta /2} and taking the square-root of both sides: sin ( θ / 2 ) = ± ( 1 − cos θ ) / 2 ...
Chapter 1 of the Socialist Constitution consists of 18 articles that outline the political structure of North Korea. Article 1 states that North Korea, which has an official name of the Democratic People's Republic of Korea, is an independent socialist state, with Article 2 also stating it as a revolutionary state. [11]
Similar right triangles illustrating the tangent and secant trigonometric functions Trigonometric functions and their reciprocals on the unit circle. The Pythagorean theorem applied to the blue triangle shows the identity 1 + cot 2 θ = csc 2 θ, and applied to the red triangle shows that 1 + tan 2 θ = sec 2 θ.
This geometric argument relies on definitions of arc length and area, which act as assumptions, so it is rather a condition imposed in construction of trigonometric functions than a provable property. [2] For the sine function, we can handle other values. If θ > π /2, then θ > 1. But sin θ ≤ 1 (because of the Pythagorean identity), so sin ...
North Korea, [d] officially the Democratic People's Republic of Korea (DPRK), [e] is a country in East Asia.It constitutes the northern half of the Korean Peninsula and borders China and Russia to the north at the Yalu (Amnok) and Tumen rivers, and South Korea to the south at the Korean Demilitarized Zone (DMZ).
The angle between the horizontal line and the shown diagonal is 1 / 2 (a + b). This is a geometric way to prove the particular tangent half-angle formula that says tan 1 / 2 (a + b) = (sin a + sin b) / (cos a + cos b). The formulae sin 1 / 2 (a + b) and cos 1 / 2 (a + b) are the ratios of the actual distances to ...
[1] [2] It consists of one deputy from each of North Korea's 687 constituencies, [3] elected to five-year terms. [4] The constitution identifies the SPA as the "highest organ of state power" and all state positions, including the President of the State Affairs and in theory the Premier of the Cabinet, trace their authority to it
The law of North Korea (officially called the Democratic People's Republic of Korea) is a codified civil law system inherited from the Japanese and influenced by the Soviet Union. It is governed by The Socialist Constitution and operates within the political system of North Korea.