InstaTrig Flashcards
(32 cards)
sin (-x)=
-sin x
cos (-x)=
cos x
tan (-x)=
-tan x
csc (-x)=
-csc x
sec (-x)=
sec x
cot (-x)=
-cot x
sin (a +/- b)
sin a X cos b +/- sin b X cos a
cos (a +/- b)
cos A X cos B +/- sin A X sin B
tan (a +/- b)
(tan a +/- tab b)/ (1 +/- tan A X tan B)
sin 2A
2 sin A cos A
cos 2A
(cos A)^2 - (sin a)^2 <> 2(cos A)^2 -1 <> 1- 2(sin A)^2
tan 2A
(2 tan A)/(1-(tan A)^2)
(sin A)^2
(1- cos 2A)/2
(cos A)^2
(1 + cos2A)/2
(tan A)^2
(1-cos2A)/(1+cos2A)
sin A + sin B
2sin((A+B)/2) X cos((A-B)/2)
sin A - sin B
2cos((A+B)/2) S sin ((A-B)/2)
cos A + cos B
2cos((A+B)/2) X cos((A-B)/2)
cos A - cos B
-2sin((A+B)/2) X sin((A-B)/2)
sin A X sin B
0.5 (cos (a-b) - cos (a+b))
cos A X cos B
0.5(cos (a-b) + cos (a+b))
sin A X cos B
0.5(sin (a+b) + sin (a-b))
cos A X sin B
0.5(sin (a+b) - sin (a-b))
(sin x)^2 + (cos x)^2=?
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