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 ...
Collect the terms involving sin x^(° ) on the left, and those involving cos x^(° ) on the right, substituting the values of sin 30^(° ) and cos 30^(° ): sin x^(° )* 12√ 3-2sin x^(° )* 12=2cos x^(° )* 12√ 3-cos x^(° )* 12, which can be r...
Step by step video & image solution for Find the value of (sec 15^o/(cosec 75^o)) + (sin 72^o/cos 18^o) - (tan 33^o/cot 57^o) by Maths experts to help you in doubts & scoring excellent marks in Class 10 exams.Updated on:21/07/2023 ...
Find the value of:(1+cos""(pi)/(8))(1+cos""(3pi)/(8))(1+cos""(5pi)/(8))(1+cos""(7pi)/(8))=?
Sin 18 degrees is the value of sine trigonometric function for an angle equal to 18 degrees. Understand methods to find the value of sin 18 degrees with examples and FAQs.
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
百度试题 结果1 题目Using a Calculator to Find the Value of a Ratio sin。sin OCOSo COS Otan tan _ ° 相关知识点: 试题来源: 解析 sin120° sin35° 0.866 0.574 cos17° cos100° 0.956 -0.174 tan 45° +an 174° 1 -0.105 反馈 收藏 ...
Find the exact value ofcos[arctan(−34)]. Question: Find the exact value ofcos[arctan(−34)]. Exact Value: If we want to find the exact value of a trigonometric expression, we need to know first how to simplify the expression. There are many ways to simplify a tr...
Answer to: Find the exact value of \cos(165 degrees). By signing up, you'll get thousands of step-by-step solutions to your homework questions. You...
Text SolutionVerified by Experts The correct Answer is:=1+1=2 Show More | ShareSave Answer Step by step video, text & image solution for Find the value of cos^(2)""(pi)/(8)+cos^(2)""(3pi)/(8)+cos^(2)""(5pi)/(8)+cos^(2)""(7pi)/(8) by Maths experts to help you...