jackrch
jackrch
13-03-2017
Mathematics
contestada
sinΘ = 15/17 and Θ lies in Q1, find cos 2Θ
Respuesta :
LammettHash
LammettHash
13-03-2017
[tex]\cos^2\theta=1-\sin^2\theta[/tex]
[tex]\cos^2\theta=1-\dfrac{225}{289}=\dfrac{64}{289}[/tex]
[tex]\cos2\theta=\cos^2\theta-\sin^2\theta[/tex]
[tex]\cos2\theta=\dfrac{64}{289}-\dfrac{225}{289}=-\dfrac{161}{289}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 89+ )
Otras preguntas
Brandon has completed the first draft of his business report and is in the third phase of the writing process, revision. what should brandon focus on during thi
how would you manage cleaning chemicals in child care or at home
PLZ HELP NEED IT ASAP!!!======================Multiplication and Division Equations ================================ Write and Solve an equation to answer each
Help....................................
What is a possible value for the missing term in the geometric sequence? 18, _, 8
An airplane makes a 2,748-mile flight in 6 hours. What is the airplane's average speed in miles per hour?
Why is it important for scientists to measure how much precipitation is falling across the world?
Which form of government that views all matters though the eyes of its primary religion Islam
Explain how an unbalanced force can change the speed and direction of an object.
Compare and contrast specific and nonspecific responses of the immune system and explain how they protect us from infection.
