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What is Trigonometric Ratios ?
Trigonometry, a branch of mathematics, is based on the ratios known as sine, cosine, and tangent. Trigonometric ratios apply only to right triangles. If A is one of the acute angles in a right triangle, then
note: Sine is abbreviated sin. Cosine is abbreviated cos. Tangent is abbreviated tan.
Example 1: Calculate sin A, cos A, and tan A in the right triangle below:
Example 2: Calculate sin B, cos B, and tan B in the right triangle above.
Prove: cotA/2.cotB/2.cotC/2 = cotA/2+cotB/2+cotC/2
Verify Liouville''s formula for y "-y" - y'' + y = 0 in (0, 1) ?
the sum of the interior angles of a convex rectilinear figure is equal to sum of the exterior angles. then the number of sides is
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Question: Use Gauss elimination method to solve the following system of equations. -y +3z=4 2x-y-2z= 2 2x-2y+z =6 4x-y-7z= 0
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what are rctilinear figures ? types of rectilinear figures and their propertiees.
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