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anonymous
 one year ago
find m∠A.
anonymous
 one year ago
find m∠A.

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taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1You can use the formula a^2=c^2+b^22abcosA, just put your values in for a,b and c and solve for A

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you help me plug them in ... im really confused :(

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1So a=4, b=5 and c=2

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.14^2=(5^2)+(2^2)2(5)(2)cosA I realized in the second portion it should have been bc not ab

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.116=25+420cosA 16=2920cosA 13=20cosA 0.65=cosA A=? Are you able to finish that?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0would divide 0.64 by cosA? if it is right im not really sure how to solve it

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Nope you have to do the inverse of the cosine function in order to get A by itself so: \[\cos ^{1}(0.65)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh... i know im gonna sound kinda dumb.. but how do you do the inverse?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i dont mean to sound mean but can you give me the answer i only have couple of mins left ! im on a timed quiz

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you so much taramgrant ! really appreciate it :) :)
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