Question

evaluate with steps please...
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Answer 1

Answer:

The answer is 1

Step-by-step explanation:

Using the formula

   $\displaystyle \int \sec^2xdx=\tan x+c$

We have

      $\displaystyle \int_0^{\frac{\pi}{4}}\sec^2xdx=[\tan x]_0^{\frac{\pi}{4}}=\tan\frac{\pi}{4}-\tan 0=1-0=1$