Any tips for figuring out which method to use to solve integrals? Like use partial fractions when you see you need to take the integral of a function. Complete the square if you have to.
use integral by parts if it's all getting multiplied ( which i think is the )
But like. When do you know you have to use trig substitution before you can use one of the previous methods? My teacher mentioned using a special one to solve some integrals, but I can't currently find my notes on that... Any other tips or recommendations?

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step-by-step explanation:

i pretty sure it is

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq