If sin A = 1/2(0°<A<90") then cos cube A-cos A =
Answers
Answered by
1
Answer:
Explanation:
If
sin
A
=
1
3
and
0
<
A
<
90
Then using
sin
2
A
+
cos
2
A
=
1
cos
2
A
=
1
−
sin
2
A
=
1
−
1
9
=
8
9
Then
cos
A
=
±
√
8
9
=
±
2
√
2
3
But if 0< A< 90, then the cosine is positive and
cos
A
=
2
√
2
3
Answered by
0
Answer:
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