What is the integral from 0 to 7 of 1/(sqrt(49-t^2)) ?

The integral from 0 to 7 of 1/(sqrt(49-t^2)) is pi/2

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integral from 0 to 7 of 1/(sqrt(49-t^2))

\int_{0}^{7} \frac{1}{49 - t ^{2}} d t

\frac{π}{2}

Decimal

1.57079 \dots

Solution steps

\int_{0}^{7} \frac{1}{49 - t ^{2}} d t

Apply Trigonometric Substitution

= \int_{0}^{\frac{π}{2}} 1 d u

Integral of a constant:

\int a d x = a x

= [1 \cdot u]_{0}^{\frac{π}{2}}

Simplify

= [u]_{0}^{\frac{π}{2}}

Compute the boundaries:

\frac{π}{2}

= \frac{π}{2}

What is the integral from 0 to 7 of 1/(sqrt(49-t^2)) ?
The integral from 0 to 7 of 1/(sqrt(49-t^2)) is pi/2