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tanx = sinx/cosxapply the quotient rule use the identity cos^x + sin^x = 1 to simplify

The subjunctive form is gradually becoming less common in French, however it is important to be able to recognise this mood in writing. Its formation is simple:take the third-person present plural form of...

The law of conservation of momentum states that for a system, under the influence of no external forces, the sum of the momenta of all objects, which are calculated by multiplying their masses and velocit...

Prepare the metal surface by rubbing it with a bar of soap. Place the metal against firebricks and use a gas torch to heat the metal surface evenly. When the soap turns black, stop heating the metal and a...

The solutions to quadratic equations, which are of the form ax^2+bx+c=0 with a≠0, are given by the Quadratic Formula: x= [-b+-sqrt(b^2-4ac)]/(2a). However, all real numbers, whether negative or not, squar...