trig Identities 12

Mathematics
Tutor: None Selected Time limit: 1 Day

Solve the following equation for 0<x<pie:2cos^x-cosx=0  : . Select all that apply.

Dec 17th, 2014

2cosx-cosx=0 
take cosx common so, 
cosx=0 
now we can write o=cos(pie/2) pie =180 

so we get 

cosx=cos(90) 

x=pie/2

Dec 17th, 2014

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Dec 17th, 2014
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