Question #9f262

1 Answer
Jim G.
Dec 12, 2017

#1/2#

Explanation:

#"using the "color(blue)"addition formula for cos"#

#color(red)(bar(ul(|color(white)(2/2)color(black)(cos(A+B)=cosAcosB-sinAsinB)color(white)(2/2)|)))#

#"here "A=24" and "B=36#

#rArrcos(24+36)^@=cos60^@=1/2#

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