Which one of the following is correct? (A) `tan1gttan^-11` (B) tan`,tan^-11 (C) `tan1=tan^-11` (D) none of these

Which of the following is greatest? tan1(b)tan4(c)tan7(d)tan10

If median of the /_ABC through A is perpendicular to BC then which one of the following is correct? a) tan A+tan B=0b)tan B-tan C=0c c) tan C+2tan A=0d)tan B+tan C=0

Show that tan^(-1)(2/11) + tan^(-1)( 7/24) =tan^(-1) (1/2)

Prove that: tan^(-1)2/(11)+tan^(-1)7/(24)=tan^(-1)1/2

Prove that tan^(-1). 1/2 +tan^(-1). 2/11 = tan^(-1) . 3/4

If angle C of a triangle ABC be obtuse,then (A) 0 1 (C) tan A tan B=1(D) none of these

Show that ,,tan^(-1)(1)/(2)+tan^(-1)(2)/(11)=tan^(-1)(3)/(4)

65.Which one of the following statement is incorrect.(1) sino+sin 30+ sin 50+....+ sin(2n - 1) = SIEsine(11) The minimum value of sin^x+cos^x is(11) In an acute-angle tringle ABC, tanA tans tancs 313.(IV) tan6^@ tan42^@ tan 66^@ tan 78^@ =1(C) (111)(A) (1)(B) (11)(D) (M)

tan^(-1)((1)/(2))+tan^(-1)((2)/(11))=

(a) tan A+tan B+tan C=tan A tan B tan C