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    Mathematics
  3. Study Set
    Thomas Calculus Early Transcendentals Study Set 1
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    Exam 8: Techniques of Integration
  5. Question
    Evaluate the Integral\[\int _ { 0 } ^ { \pi / 2 } \cos 5 t \cos 4 t d t\]
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Evaluate the Integral ∫0π/2cos⁡5tcos⁡4tdt\int _ { 0 } ^ { \pi / 2 } \cos 5 t \cos 4 t d t∫0π/2​cos5tcos4tdt

Question 114

Question 114

Multiple Choice

Evaluate the integral.
- ∫0π/2cos⁡5tcos⁡4tdt\int _ { 0 } ^ { \pi / 2 } \cos 5 t \cos 4 t d t∫0π/2​cos5tcos4tdt


A) 57\frac { 5 } { 7 }75​
B) 59\frac { 5 } { 9 }95​
C) 49\frac { 4 } { 9 }94​
D) 1

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