csc(225°) The cosecant function is the reciprocal of the sine function. So if you think about the ratios of a triangle for sine, you have opposite/hypotenuse. For cosecant, it will be …

## “Why is sin(70°) the same as sin(110°)?

From Quora, Here's a diagram. Each is 20°away from 90°. If you think in terms of the ratios of the sides of the triangles for the angles, SOHCAHTOA, then the opposite sides are the same and the …

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## “How will you evaluate the approximate value of tan 46 degrees?”

Came up with a bit of a strange method for an approximation of tan(46 degrees) I would first note that 46 degrees is close to 45 degrees. The tan(45 degrees) = 1 since it's a 45 degree triangle and …

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## “If I am given a cosine function, how do I write an equivalent sine function without graphing?”

Check out this comparison of sinx and cosx. If you shift sinx to the left by (1/2)π, it is the same as cosx. You can add a phase displacement by adding or subtracting from the argument of the …

## “How to find the height of an equilateral triangle?”

Draw an additional vertical line to split the equilateral triangle into two 30-60-90 triangles. Then you can either use trig functions or the Pythagorean Theorem. …

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## “How were sine, cosine, and tangent derived?” Discovery, without using calculator

The ancient Babylonians and Egyptians knew some about trigonometry. As did the ancient Greeks. The Greeks, Euclid and Archimedes, had the law of cosines and law of sines in their work. Often thought …