sin(30°)sin(30°) The exact value ofsin(30°)sin(30°)is1212. 1212 The result can be shown inmultipleforms. Exact Form: 1212 Decimal Form: 0.50.5 sin30°sin30° ( ) | [ ] √ ≥ ° 7 8
The exact value ofcos(30)cos(30)is√3232. 12⋅√22+√32sin(45)12⋅22+32sin(45) The exact value ofsin(45)sin(45)is√2222. 12⋅√22+√32⋅√2212⋅22+32⋅22 Simplify12⋅√22+√32⋅√2212⋅22+32⋅22. Tap for more steps... ...
If we have an exact angle such as 0∘,30∘,45∘,60∘,90∘, among others, and functions such as sine and cosine, we can place these angles on the unit circle and find the exact value of the functions. Answer and Explanation: Given: sin30∘cos60∘ ...
Find the exact value. Do not use a calculator. sin 0. Find the exact value of the expression. sin 120 cos 60 - cos 120 sin 60 Find the exact value of the expression. sin 20 cos 5 + cos 20 sin 5 Find the exact value of the expression. cos 15 deg cos 30 deg - sin 15 deg ...
Learn the value of sin 60 degrees along with other degree values like 0, 30, 45, 90, 180, 270 and 360 (degrees). Also, know the values of cosine and tangent ratios.
Q. Find the Exact value of Sin 15 using trigonometry table values. Answer- sin15 ° can be written as, sin(45° -30°) sin15°= sin(45° -30°)= sin45° cos30°-cos45°sin30°, [using sin(X-Y)=sinXcosY-cosXsinY] or,sin15° = (1/√2×√3/2)- (1/2×1/√2) {...
Another method to derive the value of sineo120 degrees is by using cosine functions. With the help of the trigonometry formula, sino(90 + a) = cosoa ,we can determine sin 120 exact value. As we know, sino(90° + 30°) = sino120 degrees. ...
How to find exact value of sin 18? 相关知识点: 试题来源: 解析 Let A=189Therefore, 5A = 90°=2A + 3A=90°=20=90°-3A 513137232Taking sine on both sides, we getsin 2A = sin (90° - 3A) = cos 3A= 2 sin A cos A = 4 cos^3 A - 3 cos A= 2 sin A cos A - 4 cos^...
We know that the exact value of cos 0 degrees is 1. So, cos 180 degrees which can be written as −(cos 0) is equal to −(1). Therefore, the value of cos 180 degrees = −1. It is also represented in terms of radians. ...
How do you find the exact value of sin690 ? https://socratic.org/questions/how-do-you-find-the-exact-value-of-sin690 −21 . Explanation: sin690∘=sin(720∘−30∘) , =sin(4π−6π) ... 更多结果 共享 复制 已复制到剪贴板 示例 二次方程式 x2−4x−5=0 三角学 4sin...