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• ### If sin 9° ×  sin 27° = cos 63° × cos 81° then, what's it identity value?

sin 63° × cos 81°
sin 63° ×tan 81°
tan 63° × cos 81°
cos 63° × cos 81°

-1
2
3
1

1
-1
-2
3

-1
1
2
-2
• ### What is the numerical value of sin70°.cos20° + sin20°.cos70°?

sin270° + cos270° = -1
sin270° + cos270° = -1
sin270° + cos270° = 1
cos270° + tan270° = 1
• ### What is the identical value of sin 240°?

(frac{sqrt{3}}{2})
-(frac{1}{sqrt{2}})
-(frac{sqrt{3}}{2})
(frac{1}{sqrt{2}})

-(sqrt{3})
-(sqrt{2})
(sqrt{3})
(sqrt{2})

cos A
tan A
sin A
sec A

cosec A
cos A
sin A
cot A

cosec A
sec A
tan A
cot A

cot A
cosA
sec A
sin A

cosec A
cot A
sin A
cos A

tan A
sinA
cos A
cot A

sin A
cosec A
tan A
cos A


cos A
;i:1;s:13:
sin A



sin A
;i:1;s:11:

;i:2;s:5:

sec A
;i:3;s:5:

tan A
;i:1;s:13:

cot A


;i:2;s:7:
;i:1;s:5:
;i:3;s:5:

;i:3;s:5:
sin A
;i:2;s:5:



;i:1;s:4:
;i:2;s:5:
;i:3;s:5:

secA
cosec A
sin A
cos A



;i:1;s:11:
cot A



;i:1;s:11:
tan A

cos A
sin A
tan A
cot A

sec A
sin A
cot A
cosec A

cos A
tan A
cot A
sin A

sin A
cos A
cot A
cosec A

cos A
cosc A
tan A
sin A

sin A
cos A
tan A
cosec A

secA
cosec A
sin A
cos A

cos A
tan A
sin A
sec A

sin A
cosec A
cot A
sec A

sec A
cos A
sin A
tan A

cosec A
sec A
tan A
sin A