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On page 13, this is the third example case dealing with oblique triangles that Richard Turner examines in his 1765 book, "Plain Trigonometry." Turner solves oblique triangles by breaking them down into right triangles.
In this, page 5 of Richard Turner's 1765 book "Plain Trigonometry," Turner describes his four axioms or rules that can be used to solve right triangles.
This is page 6, the first page of several in Richard Turner's book "Plain Trigonometry," in which Turner walks the reader through the use of his axioms to solve right triangles.
The dedication page of Richard Turner's 1765 book "Plain Trigonometry," bound together with his works on Astronomy and Geography. The page is addressed to the gentlemen who have an interest in trigonometry or have a use of it in their careers. …
The title page for Richard Turner's 1765 book "Plain Trigonometry," bound together with his works on Astronomy and Geography.
This is an apparent advertisement for a model globe, present in Richard Turner's book "A View of the Earth," published in 1765.
Richard Turner, insert between 22 and 23, as found in Turner's A View of the Heavens, (USU SCA).
Richard Turner, insert between 22 and 23, as found in Turner's A View of the Heavens, (USU SCA).
On the fourth page of Richard Turner's 1765 book "Plain Trigonometry," Turner concludes his basics of working with triangles. Here he explains what we call today the rule of similar triangles.
In this, the first content page of Richard Turner's 1765 book "Plain Trigonometry," he begins to review the basic rules of working with triangles, which are still applicable and taught today.
In the third page of Richard Turner's 1765 book "Plain Trigonometry," he expands on his review of the basic rules of triangles, which are still applicable and taught today. Here he defines right and oblique triangles.
In this, the second page of Richard Turner's 1765 book "Plain Trigonometry," he continues to review the basic rules of working with triangles, which are still applicable and taught today. On this page, he defines a right angle and shows how to find…
