Find tan2θ if θ terminates in Quadrant IV and cosθ =3/5 .
1 answer:
Answer:
The answer to your question is
Step-by-step explanation:
Data
cos Ф = 3/5
tan2Ф = ?
Quadrant IV
Process
1.- Remember that tanФ = and cos Ф =
then, adjacent side = 3 and hypotenuse = 5
2.- Calculate opposite side
O² = h² - a²
O² = 5² - 3²
O² = 25 - 9
O² = 16
O = 4
3.- Calculate the tan 2Ф
tan 2Ф = 2() The opposite side is negative in the fourth
quadrangle
tan 2Ф =
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