The sine rule can be used in a triangle when we know One side and its opposite angle, plus One more side or angle e.g. Suppose we know p, q and angle Q in triangle PQR Tip: We need one complete “pair” to use the sine rule. The angle or side that we can find is the one...
triangle when we know One side and its opposite angle, plus One more side or anglee.g. Suppose we know p, q and angle Q in triangle PQR Tip: We need one complete “pair” to use the sine rule.The angle or side that we can find is the one that completes another pair. Solution:...
What is the sine rule?The Sine Function:The sine function comes from a trigonometric ratio. If we have a right triangle and look at one of its acute angles θ, then the ratio of the side opposite this angle to the hypotenuse (the longest side of the right triangle) gives us sinθ...
sin(x), sine function. Sine definition In a right triangle ABC the sine of α, sin(α) is defined as the ratio betwween the side opposite to angle α and the side opposite to the right angle (hypotenuse): sinα=a/c Example
The Sine Rule The Law of Sines (sine rule) is an important rule relating the sides and angles ofanytriangle (it doesn'thaveto be right-angled!): If a, b and c are the lengths of the sides opposite the angles A, B and C in a triangle, then: ...
The Law of Sines is also known as the sine rule, sine law, or sine formula. It is valid for all types of triangles: right, acute or obtuse triangles. The Law of Sines can be used to compute the remaining sides of a triangle when two angles and a side are known (AAS or ASA) or...
in a circle whose radius is unity, the sine of the arc that measures the angle; in a right-angled triangle, the side opposite the given angle divided by the hypotenuse. See Trigonometrical function, under Function. See also: Sine Webster's Revised Unabridged Dictionary, published 1913 by G...
used in a triangle when we know One side and its opposite angle, plus One more side or angle e.g. Suppose we know p, q and angle Q in triangle PQR Tip: We need one complete “pair” to use the sine rule. The angle or side that we can find is the one that completes another ...
Sine law relates the length of sides to the sine of angles of a triangle. Explore the concept using calculator, solved examples and FREE worksheets with Cuemath.
If the sine of an angle in a right triangle is 1/2 and the opposite side is 5, what is the hypotenuse? A. 5 B. 10 C. 15 D. 20 相关知识点: 试题来源: 解析 B。正弦定义为对边/斜边,已知正弦值为 1/2,对边为 5,所以斜边 = 对边÷正弦值 = 5÷(1/2) = 10。