sec x = 2
cos x = 1/2
x = PI/3 and x=5PI/3
The period of cosine is 2PI
The general solutions are:
x= PI/3 + 2nPI, where n is any integer
x = 5PI/3+2nPI, where n is any integer
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This is a trigonometric integration using trig identities. S tanX^3 secX dX S tanX^2 secX tanX dX S (secX^2 -1) secX tanX dX u = secX du = secX tanX S ( u^2 - 1) du 1/3secX^3 - secX + C
-2 plus 5 equals +3
secx is the inverse of cosx. secx=1/cosx. A secant is also a line drawn through the graph that touches two points on a function.
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