Does tan 75 = cot 75? if so why?

Question

I was doing a problem in my Trigonometry book and it asked me to "Find an angle (theta) that makes the following statement true." the problem was
tan (theta) =cot(45 + 2{theta}) the answer I got confused me it was tan 75 = cot 75

2766 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-03-13T03:12:20

Given

#tantheta=cot(45+2theta)#

#=>cot(90-theta)=cot(45+2theta)#

#=>(90-theta)=(45+2theta)#

#=>2theta+theta=90-45=45#

#=>3theta=45#

#=>theta=45/3=15#

Inserting this value in the given condition we get

#tan15=cot(45+2 xx 15)=cot75#

Answer 2 · 2017-03-13T04:15:17

impossible

Calculator gives:
#tan 75^@ = 3.732#
#cot 75^@ = 0.269#
These real numbers can't not be equal.
The question may be misread.