If cos2x = 7/15, find the exact value of cos^2x

[From: ] [author: ] [Date: 11-04-22] [Hit: ]

.divide that awnser by 2 = x = 31.then plug into your calculater cos^2 x = my calc got 0.73333.........

please show full working

cos^-1(7/15) = 62....
divide that awnser by 2 = x = 31.09093036
then plug into your calculater cos^2 x = my calc got 0.73333...

keywords: of,find,value,cos,If,15,exact,the,If cos2x = 7/15, find the exact value of cos^2x