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3 years ago

24. ABCDE and PQRST are regular pentagons.

Mathematics

1 answer:

SIZIF [17.4K]3 years ago

3 0

Answer:

126°

Step-by-step explanation:

In quadrilateral DSRC, SR || DC (given)

AP = BQ = CR = DS = ET (given)

$\therefore$ CR bisects $\angle DCB$

$\therefore m\angle DCR=\frac{108\degree}{2}$

( $108\degree$ is the measure of an angle of pentagon)

$\therefore m\angle DCR=54\degree$

$\because m\angle DCR + m\angle SRC=180\degree$

(Measure of interior angles on the same side of transversal)

$\therefore 54\degree + m\angle SRC=180\degree$

$\therefore m\angle SRC=180\degree- 54\degree$

$\therefore m\angle SRC=126\degree$

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If you're using the app, try seeing this answer through your browser: brainly.com/question/2867785

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Evaluate the indefinite integral:

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Make a trigonometric substitution:

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and that constant does not interfer in the differentiation process, because the derivative of a constant is zero.

I hope this helps. =)

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