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There are two types of 2D Computer graphic, bitmap and vector. A bitmap is a picture made up of lots of tiny dots called pixels and can be edited in Adobe Photoshop. Vector is when the picture is joined o...

The terror enforced in 1793 was designed to stabilise the French government by removing counter-revolutionary threats. This was partly successful, with the crushing of the risings in the Vendeé and Rouens...

Availability of water; appropriate temperature range; suitable ambient gases; sunlight

Start with the LHS:

(cos^4x - sin^4x) / cos^2x 

Recognise the difference of two squares on the top line, which simplifies to (cos^2x - sin^2x)(cos^2x + sin^2x):

(cos^2x - sin^2x)(cos^...