If Sec=25/24 , show SinA +CosA - TanA
Answers
Answered by
2
Answer:
Sin A +Cos A-Tan A
25/24
Hence,If sec =25/24,sinA +Cos A - Tan A
Answered by
1
Answer:
Explanation:
cos
A
=
5
13
sin
2
A
=
1
−
cos
2
a
=
1
−
25
169
=
144
169
sin
A
=
±
12
13
.
There are 2 opposite values of sin A, because, when cos A =
5
13
,
the arc (angle) A could be either in Quadrant 1 or in Quadrant 4.
There are also 2 opposite values for tan A
tan
A
=
sin
A
cos
A
=
±
(
12
13
)
(
13
5
)
=
±
12
5
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