Point $( \pi , 5 )$ A) $r = \ln | \tan t + 1 | + 5$

question 31

Multiple Choice

$\text { Find the solution of the differential equation } \frac { d r } { d t } = \frac { \sec ^ { 2 } t } { \tan t + 1 } \text { which passes through the }$ point $( \pi , 5 )$

• A) \(r = \ln | \tan t + 1 | + 5\)
• B) \(r = 2 \ln | \sec t + 1 |\)
• C) \(r = \ln | \tan t + 1 |\)
• D) \(r = 5 \ln | \tan t + 1 |\)
• E) \(r = 2 \ln | \sin t | + 5\)

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