Question
Find sin2x,cos2x and tan2x if sinx=(5)/(13) and x terminates in quadrant I. sin2x= cos2x= tan2x=
Solution
4.6
(119 Votos)
André
Profissional · Tutor por 6 anos
Resposta
Given that
and
terminates in quadrant I, we can find
using the Pythagorean identity
. Since
is in quadrant I,
is positive.
Now, we can find
,
, and
using the double-angle formulas.
Therefore, the values are: