If cos x 3/5 his in the I quandsant
then find
the value of sin x
Answers
Answered by
2
Step-by-step explanation:
Remember that
sin
2
x
+
cos
2
x
=
1
for all x-value
If
cos
x
=
3
5
, then
cos
x
=
1
−
sin
2
x
=
1
−
9
25
=
16
25
cos
x
=
±
√
16
25
=
±
√
16
√
25
=
±
4
5
However
x
is in 4th quadrant where
cos
x
is positive, we conclude that
cos
x
=
4
5
Answered by
1
Answer:
the value of sinx if in the first quadrant is 4/5 or -4/5 .. thank you .
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