To sharpen their trigonometry skills, Alyce, Javier, and Veronica are trying to learn how to solve some trigonometric equations in a math refresher text that they found in an old trunk one of the adults had brought to the archeological site. Here is how each of them thought about one of the problems: Solve: cos ( pi/2 − x) = 1/2 Alyce: I used the inverse cosine function. Javier: I first used an identity, and then an inverse trigonometric function. But it was not the same inverse trigonometric function that Alyce used. Using their statements as clues, go back and solve the equation the way that each of the friends did. -----what identity does javier use to be able to later use an inverse trig function?????
To sharpen their trigonometry skills, Alyce, Javier, and Veronica are trying to learn how to solve some trigonometric equations in a math refresher text that they found in an old trunk one of the adults had brought to the archeological site. Here is how each of them thought about one of the problems:
Solve: cos ( pi/2 − x) = 1/2
Alyce: I used the inverse cosine
Javier: I first used an identity, and then an inverse trigonometric function. But it was not the same inverse trigonometric function that Alyce used.
Using their statements as clues, go back and solve the equation the way that each of the friends
did.
-----what identity does javier use to be able to later use an inverse trig function?????
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