Triangle A B C. Angle C is 90 degrees. Hypotenuse A B is 29, adjacent side A C is 21, opposite side C B is 20. For the triangle above, find sin A. a. 0.724 c. 50° b. 49° d. 0.69 Please select the best answer from the choices provided A B C D

D. 0.69

Step-by-step explanation:

You can use SOHCAHTOA to find the right trigonometric identity to use:

Sine = opposite / hypotenuse

Cosine = adjacent / hypotenuse

Tangent = opposite / adjacent

The opposite side of angle A is side BC, which is 20 units long.

The hypotenuse is AB, which is 29 units long.

Opposite / hypotenuse = 20 / 29, which equals 0.689.

The correct choice is D.

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: