Subject: Maths, asked on 30/1/14

## urgent ..formula for sin-1X + sin-1Y , sin-1X -sin-1Ycos-1X + cos-1Ycos-1X - cos-1Y

Subject: Maths, asked on 19/10/13

## formula of 1-sinx

Subject: Maths, asked on 22/3/12

## prove: tan inverse [ cos x / (1+sin x)] = pie /4 - (x/2)

Subject: Maths, asked on 4/2/13

## URGENT!!Show that sin-1(4/5) +cos-1(2/square root of 5)=cot-1 (2/11)Please ans in a simple way

Subject: Maths, asked on 23/2/14

## show that tan(1/2 sin-1 3/4) = 4-root7/3

Subject: Maths, asked on 27/5/15

## Evaluate tan^(-1) 2+tan^(-1) 2/9+ tan ^(-1) 2/25 tan^(-1)2/49+....upto n terms

Subject: Maths, asked on 29/3/13

## prove that :tan [pi/4 + 1/2 cos-1 a/b] + tan[pi/4 - 1/2cos-1 a/b] = 2b/a

Subject: Maths, asked on 16/4/16

## Prove that : cos-1x-cos-1y=cos-1{xy+whole root over(1-x2)(1-y​2)​}

Subject: Maths, asked on 17/3/14

## find the value of x : sin-1x + sin-1(1-x) = cos-1x

Subject: Maths, asked on 24/1/17

## Find domain of function cos inverse(3x-2).

Subject: Maths, asked on 21/12/13

## Show that tan(1/2sin-13/4) = (4-Squareroot of 7)/ 3

Subject: Maths, asked on 23/10/14

## 2tan-1(1/3) +cot-14 =tan-1(16/13)

Subject: Maths, asked on 27/6/13

## i have 2 question -1)if cos-1(x/a)+cos-1(y/b)=dprove that : x2/a2-2xy/ab-cosd+y2/b2=sin2d2)solve tan(cos-1x)=sin(tan-1x)3)tan-1x+tan-1y+tan-1z=pi/2prove that xy+yz+zx =1

Subject: Maths, asked on 3/5/16

## Simplify: sin inverse (5/13 cos x + 12/13 sin x).

Subject: Maths, asked on 4/8/13

## cos^-1(x) + sin^-1(x/2)=pi/6find x.

Subject: Maths, asked on 19/5/17

## solve for x : tan-1(2-x/2+x) = 1/2 tan-1x/2

Subject: Maths, asked on 30/5/15

## if y = cot x , find d^2 y/ dx^2, at x = pi/4

Subject: Maths, asked on 9/2/12

## Prove that :tan-1(1/4) + tan-1(2/9) = 1/2 Cos-1 (3/5)

Subject: Maths, asked on 1/5/16

## Write sin-1( x+ square root 1-x2/ root 2 in the simplest form

Subject: Maths, asked on 29/3/13

## if cos-1x + cos-1y + cos-1z = pi prove that x2 + y2 + z2 +2xyz = 1

Subject: Maths, asked on 26/6/15

## Could any one tell me what is cot^-1 (infinity) and tan ^-1( infinity)

Subject: Maths, asked on 1/1/14

## find the greatest and least values:(sin-1x)2+(cos-1x)2

Subject: Maths, asked on 27/2/15

## Prove that 2 tan inverse (1/3) + cot inverse 4 = tan inverse (16/13)

Subject: Maths, asked on 4/8/15

## prove that tan -1(1) + tan-1(2) + tan-1(3) = pie.

Subject: Maths, asked on 11/5/12

## Principle value of:sec-1[cosec pie/8]

Subject: Maths, asked on 22/6/15

## tan inverse [ root ( 1 + x ) - root ( 1 - x ) / root( 1 + x )+ root ( 1 - x ) ] = pi/4 - 1/2 cos inverse x

Subject: Maths, asked on 5/1/19

## the value of sin-1 (cos 8) + cos-1(sin 8) is??

Subject: Maths, asked on 6/6/16

## tan(1/2(cos^-1(square root 5/3))

Subject: Maths, asked on 16/4/16

## Solve - sin(sec^-1 (17/15)) If I just provide the answer, i.e., 15/17 instead of showing the complete solution, in CBSE board exam? If yes, then there is no need to provide the solution, and if not, kindly do so.

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