The exact value ofcos(45)cos(45)is√2222. 12⋅√22+cos(30)sin(45)12⋅22+cos(30)sin(45) 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. ...
Find the exact value of sin ^{-1} (\frac{\sqrt{3{2}) and cos ^{-1} (\frac{\sqrt{3{2}). Find the exact value of cos 21 cos 39 - sin 21 sin 39 Find the exact value of the expression. cos 90 degrees + tan 45 degrees Find the exact value of the expression....
3 cm C2cm How does your answer to a) tell you that angle ACB must be obtuse4cm 相关知识点: 试题来源: 解析 The cosine rule cosC=(a^2+b^2-c^2)/(2ab) 1/(17):1/(16)=(2^2+3^2-4^2)/(1⋅7^2)=(4+9-16)/(17)=1/(17) 反馈 收藏 ...
百度试题 结果1 题目【题目】Find the exact value of cos C for the trangle shown on the rght2cm How does your answer to a) tell you that angle ACB must be bruse4cm 相关知识点: 试题来源: 解析 最佳答案 ∴x^2+y^2 反馈 收藏
Find the exact value of the following: cos(120∘−45∘) Sum-Product Formula: The sum-product formula for cosine refers to the identity that relates the cosine of the sum of two angles to the product of the cosines of each angle. The formula states that: cos(a+...
{eq}\sin^2(45^\circ) - 2 \sin(45^\circ) \cos(45^\circ) + \cos^2(45^\circ) {/eq} Pythagorean Identity The Pythagorean identity is the identity that originated from the Pythagorean theorem. It states the addition of the sine squared ...
Find the exact value of the expression. {eq}\displaystyle \sin 45 ^\circ \cos 45 ^\circ {/eq} Multiplication of Fractions: To multiply two fractions, one needs to multiply the numerators and denominators of both fractions separately. The multiplication of two fractions helps ...
6. A force F is given by F =(10i+ j)N.(a)Find the exact value of the magnitude of F.(2)(b)Find, in degrees, the size of the angle between the direction of F and the direction of the vector (i + j).(4)The resultant of the force F and the force (-15i + aj)N....
百度试题 结果1 题目Find the exact value of cos\ θ . ( ) A. 12 B. (√ 3)2 C. (√ 3)3 D. 2 相关知识点: 试题来源: 解析 C 反馈 收藏
Find the exact value of sec (-420 degrees). Find the exact value of cos 45 degrees. Find the exact value of sec 300 degrees. Find the exact value of: cos 105 degrees Find the exact value for the following, if possible. sec 90 degrees ...