Question

what is the value of sin90/cos72​

Answer 1

Answer:

1/cos 72

Step-by-step explanation:

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Answer 2

Answer:1cos/72

The three most familiar trigonometric ratios in the trigonometric functions are sine function, cosine function, and tangent function. It is generally defined for the angles less than a right angle, and the trigonometric functions are stated as the ratio of two sides of a right triangle containing the angle in which the values can be found in the length of various line segments around a unit circle.

Usually, the degrees are represented in the form of 0°, 30°, 45°, 60°, 90°, 180°, 270° and 360°. Here, let us discuss the value for cos 90 degrees which is equal to zero and how the values are derived using the quadrants of a unit circle.

Value of Cos 90° = 0

Cos 90 degrees

To define the cosine function of an acute angle, consider a right-angled triangle provided with the angle of interest and the sides of a triangle. The three sides of the triangle are defined as follows:

The opposite side is a side which is opposite to the angle of interest.

The hypotenuse side is the opposite side of the right angle and it should be the longest side of a right triangle

The adjacent side is the remaining side of a triangle where it forms a side of both the angle of interest and the right angle

Step-by-step explanation:

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