hhomeschool24
22.01.2022 •
Mathematics
HELP!!! Find the exact value of
cos A in simplest radical form.
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Ответ:
cos A = 9/41
Step-by-step explanation:
cosine is a function that puts together the ADJACENT side of a triangle in a ratio with the HYPOTENUSE.
So from angle A the side length 9 is right next to A so it is the ADJACENT side. The HYPOTENUSE is the longest side ,that is the side length 41.
so cos A = ADJ/HYP
cos A = 9/41
It could be that the directions were confusing bc they said simplest radical form. Many, but not all right triangles have one or more sidesides that have a radical as part of their measure. This triangle doesn't. If you get a radical in the denominator of a ratio, be sure to rationalize so that there is no radical on the bottom.
Ответ:
Always.
Step-by-step explanation:
Angles on a straight line add up to 180° To be proved: If a straight line stands on a straight line, then it makes either two right angles or angles whose sum equals two right angles.