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OpenStudy (anonymous):
if sinx=4/5 and x is in quadrant 2, then tan2x= a. -27/7 b. 24/7 c. 12/7 d. -12/7
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OpenStudy (anonymous):
SOHCAHTOA O / H = 4/5 A will be 3. You can use the pythagorean theorem to find that out. Quadrant two, x is neg and y is pos. So. Y is 4, X is 3, H is 5. Plug in the values for the tan double angle. and you get your answer.
OpenStudy (anonymous):
i got b
OpenStudy (anonymous):
It has to be a negative value.
OpenStudy (anonymous):
X is -3. Sorry.
OpenStudy (anonymous):
so a
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OpenStudy (anonymous):
yes.
OpenStudy (anonymous):
thank you!!!
OpenStudy (anonymous):
no problem.
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