COSA
sin A
+
= 1
sec A + tan A -1 cosec A + cot A - 1
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Answer:
57° 17'44" approximately
Table 1.2
sin ( - a) =
— sin a
tan ( - a) =
-tan a
sec ( - a)
=
sec a
cos ( - a) =
cos a
cot ( - a) =
-cot a
cosec ( - a)
=
- cosec a
sin (90°-a) =
cos a
tan (90°-a) =
cot a
sec (90° - a)
=
cosec a
cos (90°-a) =
sin a
cot (90°-a) =
tan a
cosec (90° - a)
=
sec a
sin (90° +a) =
cos a
tan (90° +a) =
-cot a
sec (90° +a)
=
— cosec a
cos (90° +a) =
-sin a
cot (90° +a) =
-tan a
cosec (90° + a)
=
sec a
sin (180°-a) =
sin a
tan (180°-a) =
-tan a
sec (180°-a)
=
- sec a
cos (180°-a) =
— cos a
cot (180° - a) =
— cot a
cosec (180°-a)
=
cosec a
sin (180° +a) =
- sin a
tan (180° + a) =
tan a
sec (180° +a)
=
-sec a
cos (180° + a) =
-cos a
cot (180° + a) =
cot a
cosec (180° +a)
=
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