lăng kính có tiết diện thẳng là tam giác vuông cân ABC, n= căn 2. Tia sáng SI//BC tới mắt bên AB tại i rất gần với B. Hãy vẽ đường đi tiếp theo và tính góc lệch của SI khi truyền qua lăng kính

europa2433

europa2433

step-by-step explanation:

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

answer: the correct answer is -32

step-by-step explanation:

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).