What is value of sin30?

Sine 30 Degrees Value
The exact value of sin 30 degrees is ½.
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How do you find the exact value of sin30?

How to Find the Value of Sin 30 Degrees? The value of sin 30 degrees can be calculated by constructing an angle of 30° with the x-axis, and then finding the coordinates of the corresponding point (0.866, 0.5) on the unit circle. The value of sin 30° is equal to the y-coordinate (0.5). ∴ sin 30° = 0.5.
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Does sin30 equal sin 150?

The value of sin 30 degrees and sin 150 degrees are equal. Both are equal because the reference angle for 150 is equal to 30 for the triangle formed in the unit circle. The reference angle is formed when the perpendicular is dropped from the unit circle to the x-axis, which forms a right triangle.
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Is sin30 positive or negative?

We can therefore conclude that the sin of 30 degrees is positive. 30 degrees is actually one of our special angles. And we know that the sin of 30 degrees is one-half. This confirms the correct answer of positive.
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What is the value of 2 sin30?

= √3/2 .
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Exact values of sin(30), cos(30), tan(30), csc(30), sec(30), cot(30),



What is the value of cos85?

The value of cos 85° is equal to the x-coordinate (0.0872). ∴ cos 85° = 0.0872.
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What is the exact value of 2 sin30 cos30?

Hence, the answer is sin60°.
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What is sin90 value?

What is the exact value of sin 90 degrees? The exact value of sin 90 degrees is equal to 1.
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What is sin60 value?

Therefore, the exact value of sin 60 degrees is √3/2.
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Which is equal to Sinθ?

As per the sin theta formula, sin of an angle θ, in a right-angled triangle is equal to the ratio of opposite side and hypotenuse. The sine function is one of the important trigonometric functions apart from cos and tan.
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How do you find sin 150?

The value of sin 150 degrees can be calculated by constructing an angle of 150° with the x-axis, and then finding the coordinates of the corresponding point (-0.866, 0.5) on the unit circle. The value of sin 150° is equal to the y-coordinate (0.5). ∴ sin 150° = 0.5.
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What is the value of sine at 150?

Solution. The value of sin 30 degrees and sin 150 degrees are equal. Both are equal because the reference angle for 150 is equal to 30 for the triangle formed in the unit circle. The reference angle is formed when the perpendicular is dropped from the unit circle to the x-axis, which forms a right triangle.
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Why is sin 150 a half?

Going from the origin to the top, you're half way up on the left side, then you're half way down on the right side. sine 150 = opposite side over hypotenuse = 1/2 over 1 = 1/2.
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What does tan 45 mean?

Explanation: For tan 45 degrees, the angle 45° lies between 0° and 90° (First Quadrant). Since tangent function is positive in the first quadrant, thus tan 45° value = 1. Since the tangent function is a periodic function, we can represent tan 45° as, tan 45 degrees = tan(45° + n × 180°), n ∈ Z.
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What is value of cos45?

Cos 45° Value

The approximate value of cos 45 is equal to 0.7071. Therefore, 0.7071 or 1/√2 is a value of a trigonometric function or trigonometric ratio of standard angle (45 degrees).
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Why is sin60 negative?

Trigonometry Examples

Make the expression negative because sine is negative in the fourth quadrant. The exact value of sin(60) is √32 . The result can be shown in multiple forms.
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Which of the following is the value of tan45 *?

The exact value of tan(45°) is 1. This is one of those well-known trigonometric functions that many have put to memory.
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What is value of sin180?

The exact value of sin 180 is zero. Sine is one of the primary trigonometric functions which helps in determining the angle or sides of a right-angled triangle. It is also called trigonometric ratio.
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How do you find sin 19?

The value of sin 19 degrees can be calculated by constructing an angle of 19° with the x-axis, and then finding the coordinates of the corresponding point (0.9455, 0.3256) on the unit circle. The value of sin 19° is equal to the y-coordinate (0.3256). ∴ sin 19° = 0.3256.
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How do you derive sin90?

The value of sin 90 degrees can be calculated by constructing an angle of 90° with the x-axis, and then finding the coordinates of the corresponding point (0, 1) on the unit circle. The value of sin 90° is equal to the y-coordinate (1). ∴ sin 90° = 1.
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What is the exact value of sin230 ∘ − cos230 ∘?

Hence, the answer is −21.
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How do you solve cos 30 degrees?

Cos 30 degrees is written as cos 30° and has a value in fraction form as √3/2. Cos 30° = √3/2 is an irrational number and equals to 0.8660254037 (decimal form). Therefore, the exact value of cos 30 degrees is written as 0.8660 approx.
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