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Do not use a calculator.相关知识点: 试题来源: 解析 sin 2x= (24)(25), cos 2x=- 7(25), tan 2x=- (24)7 本题考查动名词作宾语。consider 后面需要接动名词作宾语,表示“考虑做某事”。因此,正确答案为 C 选项 sending,表示“考虑让他们的孩子出国留学”。反馈 收藏 ...
Use the figure to find the exact values ofsin2u,cos2uandtan2u. Identities of Trigonometric Functions: Using trigonometry we can express the double angle formula of basic trigonometric functions like,sin2x,cos2xandtan2x. Using trigonometric identities we can ...
Answer to: Find the exact value of sin theta and tan theta when cos theta has the indicated value. cos theta = 1 By signing up, you'll get...
题目Find the exact values of sin 20, cos 20, and tan 20.26.$$ \sin \theta = \frac { 1 } { 3 } , 0 相关知识点: 试题来源: 解析 $$ \frac{4 \sqrt{2}}{9}. \frac{7}{9}. \frac{4 \sqrt{2}}{7} $$ 反馈 收藏
Find the exact value of cos21cos39−sin21sin39 Trigonometric Functions: For a right-angle triangle, the trigonometric functions are used to give the relation between two sides of the triangle and one angle of the triangle. Three primary trigonometric functions are sine, cosine...
In Exercise, find the exact values of the six trigonometric functions of the angle θ . 相关知识点: 试题来源: 解析 sinθ =(√(65))9cosθ =49tanθ =(√(65))4cscθ =(9√(65))(65)secθ =94cotθ =(4√(65))(65)反馈 收藏 ...
{eq}\begin{align*} \sin \left( { - \theta } \right) &= - \sin \left( \theta \right)\\ \cos \left( { - \theta } \right) &= \cos \left( \theta \right)\\ \tan \left( { - \theta } \right) &= - \tan \left( \theta \right)\\ \tan \left( \t...
You found values of trigonometric functions for acute angles. • Find values of trigonometric functions for general angles. • Find values of trigonometric functions by using reference angles. • quadrantal angle • reference angle Evaluate Trigonometric Functions Given a Point ...
Find the exact values of the remaining five trigonometric functions of θ. Suppose θ is an angle in the standard position whose terminal side is in Quadrant Ⅱ and tan \ θ =-√ 3. ( ) A. sin θ =- (√ 3)2, cos θ =- 12, csc θ =- (2√ 3)3, sec θ =-2, cot θ ...