values for measure of angle A  TOPIC_SOLVED

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values for measure of angle A  TOPIC_SOLVED

Postby yfelix45 on Wed Feb 29, 2012 2:16 pm

Hello,
tanA = -2/6
a. Draw two possible locations on the coordinate axis for the terminal arm of angle A
b. Find two possible values for the measure of angle A and the related acute angle.

I have done the first part of the question what I need help with is the second part
This what I have done so far:
tanA = -2/6 = tanA = -0.3
A = tan^-1 = -0.3
A = -16.7
the -16.7 angle is related to the acute angle A
Therefore angle A = 180 - (-16.7)
= 196.7.

Is this right? or Is there another way to do this?

Thanks
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Postby stapel_eliz on Wed Feb 29, 2012 4:44 pm

yfelix45 wrote:tanA = -2/6
a. Draw two possible locations on the coordinate axis for the terminal arm of angle A

In what quadrant(s) must the terminal side of angle A lie? Think about the sign on -2/6. :wink:

Note: "The acute angle" is for some angle related to angle A; it is not angle A itself.
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