Asked by mkc
is secA*cosA =1 for all A where 0<=A<=90? please provide a solution
Answers
Answered by
Damon
Trick question
(1/cos A)(cos A) = 1
unless cos A = 0
but what is cos 90 ?
If A = 90. in fact the secant is just plain not defined.
http://socratic.org/questions/what-is-the-exact-value-of-sec-90
(1/cos A)(cos A) = 1
unless cos A = 0
but what is cos 90 ?
If A = 90. in fact the secant is just plain not defined.
http://socratic.org/questions/what-is-the-exact-value-of-sec-90
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