How do you convert #rcos(theta) = 4# into rectangular form?

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Answer 1 · 2015-12-16T16:46:05

Use the identity ...

#x=rcostheta# or equivalently #x/r=costheta#

Using substitution ...

#rcostheta=4#

#r(x/r)=4#

Now, simplify ...

#x=4#

hope that helped