The values of the sine and cosine functions for 20 are sin 20 = 85 and cos 20 = 84. Explanation: The given question states that cos 0 = 84, sin 20 = 85, and sin 0 <0. We need to find the values of the sine and cosine functions for 20. Since sin 0 < 0, we know that the angle 0 is in the fourth quadrant where sine is negative.

2018年4月29日 · Every trigonometry function is positive in quadrant 1. Sin(20) = 0.3420 [I just used a calculator to get this amount] Sin(160°) 160 is in the second quadrant. The sine function positive in quad 2. To find the reference number of any angle in quad 2, Subtract the base angle from 180° Sin(180 - 20) = sin(160) = 0.3420 [obtained from the calculator.

2018年6月18日 · To find the length of LN using the equation L N = 8 sin (2 0 ∘), we start by calculating sin (2 0 ∘). Using a calculator or a trigonometric table, we find that: sin ( 2 0 ∘ ) ≈ 0.3420 .

To find the value of sin 20, we use a unit circle. The sin 20 is a positive value between 0 and 1. The tangent value given is irrelevant to the calculation. Explanation: To find the value of sin 20 we can use the unit circle which is a common tool in trigonometry. The unit …

sin (20°) = 8 L N First, we need to find sin (20°). Using a calculator or trigonometric table, we find: sin (20°) ≈ 0.3420. Next, we can rearrange the equation to solve for LN: L N = 8 ⋅ sin (20°) Substituting the value of sin (20°): L N ≈ 8 ⋅ 0.3420 ≈ 2.736. Now, we need to round this value to the nearest tenth.

2020年11月3日 · The value of sin (8 0 ∘) cos (2 0 ∘) − cos (8 0 ∘) sin (2 0 ∘) is 2 3 . This is derived by using the sine subtraction formula. This is derived by using the sine subtraction formula. The calculation simplifies to sin ( 6 0 ∘ ) , which equals 2 3 .

2020年4月15日 · From the equation given, we can find LN using the equation: L N = 8 × sin (20°) Next, we need to calculate sin (20°). Using a calculator or trigonometric tables: sin (20°) ≈ 0.3420. Now substituting the sine value into the equation for LN: LN ≈ 8 × 0.3420 LN ≈ 2.736. Finally, we round 2.736 to the nearest tenth: LN ≈ 2.7

2022年1月5日 · Substitute sin (2 0 ∘) into the equation: l n = 8 ⋅ sin (2 0 ∘) So, l n ≈ 8 ⋅ 0.3420 Perform the multiplication: l n ≈ 2.736 Round this value to the nearest tenth: Since the digit in the hundredths place (3) is less than 5, l n ≈ 2.7 when rounded to the nearest tenth.

2023年10月30日 · The result, g = 20.31, is the solution to the equation. Explanation: To solve the equation g sin 20° = 7 for g, we need to isolate g on one side of the equation. This means we'll be performing the operation of dividing both sides of the equation by sin 20°. The mathematical steps look like this: g sin 20° = 7; g = 7/sin 20°

2017年4月26日 · For example, if we substitute x = 3 5 ∘ back into the original equation, we can verify the equality holds: cos (3 5 ∘) is indeed equal to sin (2 0 ∘ + 3 5 ∘) = sin (5 5 ∘). The application of the sine and cosine relationship is supported by the trigonometric identity sin ( 9 0 ∘ − x ) = cos x , which is well-established in ...