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For an angle of 30 degrees, the sine is 1/2.
Sin 30. Sin(30°) = opposite hypotenuse = 1 2 The Whole Circle For the whole circle we need values in every quadrant , with the correct plus or minus sign as per Cartesian Coordinates :. Sine is a trigonometric ration.its value varies between -1 to +1 …it has a sinusoidal curve starting from origin.And the value of sin 30 is 1/2Which belongs to the interval of -1 to +1 717 views. In an equilateral triangle each angle is 60o (and all the sides have equal length) From the image below:.
Note down the pattern from sin 0 to sin 90:. This is one of the basic right-angled triangles. Now we know the lengths, we can calculate the functions:.
Trig table gives --> sin 30 = 1/2 Therefor, sin (-30) = - 1/2. Even there is no need to try too hard to memorize them. The classic 30° triangle has a hypotenuse of length 2, an opposite side of length 1 and an adjacent side of √ 3:.
Hence, we can now fill all sin values in the table. Sin 30 is also written as sin π/6, in radians. Find the value of sin (-30) Ans:.
Evaluate sin 60° and tan 60°. What are the sine, cosine and tangent of 30° ?. There is an easy way to memorize them.
For memorising cos 0°, cos 30°, cos 45°, cos 60° and cos 90° Cos is the opposite of sin. Just memorize the values for sin 0, sin 30, sin 45, sin 60 and sin 90. According to the property of cofunctions (Topic 3), sin 30° is equal to cos 60°.
To see the answer, pass your mouse over the colored area. Trigonometric functions are important, in the study of periodic phenomena like sound and light waves, average temperature variations and the position and velocity of harmonic oscillators and many other applications. -1/2 sin (-30) = - sin (30).
We should learn it like cos 0° = sin 90° = 1 cos 30° = sin 60° = √3/2 cos 45° = sin 45° = 1/√2 cos 60° = sin 30° = 1/2 cos 90° = sin 0° = 0 So, for cos, it will be like 1, √3/2, 1/√2, 1/2, 0 For tan. We can see that the sin(30o) = 1 2. Sin 30° = ½.
Now, we will fill all the cos values. Sine 30° = 1/2 or 0.5 If you have a right triangle and you select one of the angles, the sine of the angle is the ratio between the side opposite to the angle and the hypotenuse (the longest side of the triangle).
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