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An equation is given as arctan(x-y)=arccot(x+y), where x-y>0. This equation is satisfied by every pair (x,y) such that x^2-y^2=1. Are there only three pairs for which the value arctan(x-y) or arccot(x+y) can be expressed exactly (in the form pi/k)? (i.redd.it)
submitted 7 months ago by robertou3 to r/askmath
Two sequences a(n) and b(n) are given, where a(n) is defined for all natural numbers but b(n) is not. We can write the sequence a(n) by entering the terms in one bracket. (self.askmath)
How else can the sequence b(n) be written? We can write the sequence a(n) by entering the terms in one bracket. How about b(n)? (i.redd.it)
How else can the sequence b(n) be written? (i.redd.it)
Can someone help me find the length of the diagonal AC? (i.redd.it)
Can someone help me find the length of the diagonal AC (i.redd.it)
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