T tawaqul Full Member 10+ Year Member 15+ Year Member Aug 17, 2008 #1 Advertisement - Members don't see this ad tan x = tan (90-x) when x=? The answer is -45, but why can't it be zero? thanks in advance 🙂
Advertisement - Members don't see this ad tan x = tan (90-x) when x=? The answer is -45, but why can't it be zero? thanks in advance 🙂
chessxwizard Full Member 10+ Year Member 15+ Year Member Aug 17, 2008 #2 Tan 0 is 1; tan 90 is undefined... Upvote 0 Downvote
T tawaqul Full Member 10+ Year Member 15+ Year Member Aug 17, 2008 #3 chessxwizard said: Tan 0 is 1; tan 90 is undefined... Click to expand... o, woops, yeah ..thanks Upvote 0 Downvote
T TexasDent Aug 17, 2008 #4 I think the answer would be both 45 and -45....I don't know if those were both a choice or only -45 but they would both work. Upvote 0 Downvote
I think the answer would be both 45 and -45....I don't know if those were both a choice or only -45 but they would both work.
A Andre3k Full Member 15+ Year Member Aug 17, 2008 #5 how does -45 work? i see how 45 would work tan (90-45)= tan (45) tan (90-(-45))= tan (135) not tan (45) Upvote 0 Downvote
how does -45 work? i see how 45 would work tan (90-45)= tan (45) tan (90-(-45))= tan (135) not tan (45)
