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The sine of a 90-degree angle is equal to 1. This is because, in the unit circle, a 90-degree angle corresponds to the point (0, 1), where the sine is defined as the y-coordinate. Thus, sin(90°) = 1.

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2d ago

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What is the sine co sine and tangent of a 90 degree angle if it is on an isosceles right triangle?

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Yes, the sine, cosine and tangent are integral to problem solving (angles and side lengths) in right angle triangles (triangles with a 90 degree angle included).


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The 90-degree formula, often referred to in the context of trigonometry, involves the relationship between the sine and cosine functions for angles. Specifically, it states that for any angle θ, the sine of an angle is equal to the cosine of its complementary angle: ( \sin(θ) = \cos(90° - θ) ). This relationship is fundamental in solving various trigonometric problems and is widely used in geometry and physics.


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No. The sine of an acute angle is less than 1. An acute angle is less than 90 degrees. The sine of 0 degrees is 0, and the sine of 90 degrees is +1. So the sines of the angles between 0 degrees and 90 degrees are less than 1.


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