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Rufina [12.5K]
3 years ago
15

Can someone please help

Mathematics
1 answer:
xenn [34]3 years ago
4 0

Answer:

9

Step-by-step explanation:

det A=(5x6)-(3x7)

=30-21

=9

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(a) Yes all six trig functions exist for this point in quadrant III. The only time you'll run into problems is when either x = 0 or y = 0, due to division by zero errors. For instance, if x = 0, then tan(t) = sin(t)/cos(t) will have cos(t) = 0, as x = cos(t). you cannot have zero in the denominator. Since neither coordinate is zero, we don't have such problems.

---------------------------------------------------------------------------------------

(b) The following functions are positive in quadrant III:

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