tanA+cotA=2 then find tan^7A+cot^7A
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Step-by-step explanation:
Tantheta +cottheta=2
Tantheta+1/tantheta=2 (cot=1/tan)
Tan^2theta+1=2tantheta
tan^2theta-2tantheta+1=0
(tantheta-1)^2=0
tantheta-1=0
tantheta=0
tan^7theta+cot^7theta
tan^7theta +1/tan^7theta
1+1=2 ☺️
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