EXERCNEA 41 52 7 30. If in a AABC, Tan A+ Tan B+Tan C 6 and...

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EXERCNEA 41 52 7 30. If in a AABC, Tan A+ Tan B+Tan C 6 and TanA TanB = 2 then the triangle is EXERO 413 Jr. MATHEMATICS 512 then tan y = cCos X 2 and cos(x-y)= cos y EXER 41 Sp 14)1 1) Right angled 2) Acute angled 1) 3+4 2) 3 +1 3) 3-4 4) 3-1 x tan A+y tan B 22. If 3) Obtuse angled 4) Equilateral angled 16 1 3 Tan x = 4 Tan y then hen cos A 31. If Sinx Cos y = 412 then x+y 23. If y cos B A+B Sin(x+ y) = A+B 2) tan 4)1 3 4) 16 1) cot- 3) 4) tan(A + B) 1) 16 3) cot (A+ B) 3t 1+ cos- 8. )3 3)4 1+cos 1+ cos 8. 24. If cos x = cos y and sin x = -siny, then 1+cos 32. sin 2008 x + sin 2008 y = 3) 0 hen 4)-2008 TC 4) cos 8. 2) 2008 1) 1 2) 3) 1) 1 25. (A): If A= 35°, B= 15°, C=40°, then tanA tanB + tanB tanC + tanC tan A=1 3) 2 13)1 33. If A+B= and cosA+cos B =1 then (R): If A + B+ C=90°, then E tan A tan B=1 Then which one of the following is true ? 1) A is true, R is true and R is correct explana- cos(A-B)= 2) 1. 2) To 3) 34. (1+ tan 1) (1 + tan 2) (1 + tan 3). (1+ tan 44) (1 + tan 45") = 2° then n = 3) 22 4) 23 ****** tion of A 2) A is true, R is true but R is not correct A-B). sin(4- GMT21 (R): sin(A + B).sin (A – B) = sin* A –sin B Then, which one of the following is true ? ARS explanation of A 1) 20 3) A is true, R is false 4) A is false, R is true V3 35 If a = cos A + cos B-cos (A + B) and A+B B b-4 sin sin- cos %3D 26. (A): sin 45° - sin 15° = then a-b%3D CATION3. 2. 1 4) 1) 1 2) 2 3) 2. 36. If 1+sin@=9cose and 0°< e<90° then 5(1-cos e) = 1) A is true, R is true and R is correct explana- %3D tion of A 2) A is true, R is true but R is not correct expla- 3) 4sin e 4) tane 1) sine 2) 2sin e nation of A 3) A is true, R is false 4) A is false, R is true 37. If sin 320-k and cos x =1-2k2; a,B are the 27. If cose-sine = 2 sine then cose+ sine = 1) 2 cose values of x betwen 0° and 360° with a<B, 2) 2 sine then 4) 2sin@ 2) B= 20° + a 3) 2cose 1) B=180°-a 28 The quadratic equation whose roots are sin'18° 4) B= 5a-20° 3) B= 4a+ 40° 1) 16x- 12x +1 = 0 2) 16x + 12x +1 = 0 38. Which of the following inequalities is true ? 3) 16x- 12x- 1 = 0 4) 16r + 10x + 1 = 0 and cos 36° is 1) sin 10 > 0, cos 8 >0 2) sin10 < 0, cos 8> 0 29. sin 55°-sin 190 +sin 53° – sin 17° = 2) cos 1° %3D 3) sin 10 < 0, cos 8 <0 1) sin 1° 4) sin 10 > 0, cos 8<0 55 3)-sin 1° 4)-cos 10 AKASH FAST TRACK CRD 3/2 2) 3/5 EXERCNEA 41 52 7 30. If in a AABC, Tan A+ Tan B+Tan C 6 and TanA TanB = 2 then the triangle is EXERO 413 Jr. MATHEMATICS 512 then tan y = cCos X 2 and cos(x-y)= cos y EXER 41 Sp 14)1 1) Right angled 2) Acute angled 1) 3+4 2) 3 +1 3) 3-4 4) 3-1 x tan A+y tan B 22. If 3) Obtuse angled 4) Equilateral angled 16 1 3 Tan x = 4 Tan y then hen cos A 31. If Sinx Cos y = 412 then x+y 23. If y cos B A+B Sin(x+ y) = A+B 2) tan 4)1 3 4) 16 1) cot- 3) 4) tan(A + B) 1) 16 3) cot (A+ B) 3t 1+ cos- 8. )3 3)4 1+cos 1+ cos 8. 24. If cos x = cos y and sin x = -siny, then 1+cos 32. sin 2008 x + sin 2008 y = 3) 0 hen 4)-2008 TC 4) cos 8. 2) 2008 1) 1 2) 3) 1) 1 25. (A): If A= 35°, B= 15°, C=40°, then tanA tanB + tanB tanC + tanC tan A=1 3) 2 13)1 33. If A+B= and cosA+cos B =1 then (R): If A + B+ C=90°, then E tan A tan B=1 Then which one of the following is true ? 1) A is true, R is true and R is correct explana- cos(A-B)= 2) 1. 2) To 3) 34. (1+ tan 1) (1 + tan 2) (1 + tan 3). (1+ tan 44) (1 + tan 45") = 2° then n = 3) 22 4) 23 ****** tion of A 2) A is true, R is true but R is not correct A-B). sin(4- GMT21 (R): sin(A + B).sin (A – B) = sin* A –sin B Then, which one of the following is true ? ARS explanation of A 1) 20 3) A is true, R is false 4) A is false, R is true V3 35 If a = cos A + cos B-cos (A + B) and A+B B b-4 sin sin- cos %3D 26. (A): sin 45° - sin 15° = then a-b%3D CATION3. 2. 1 4) 1) 1 2) 2 3) 2. 36. If 1+sin@=9cose and 0°< e<90° then 5(1-cos e) = 1) A is true, R is true and R is correct explana- %3D tion of A 2) A is true, R is true but R is not correct expla- 3) 4sin e 4) tane 1) sine 2) 2sin e nation of A 3) A is true, R is false 4) A is false, R is true 37. If sin 320-k and cos x =1-2k2; a,B are the 27. If cose-sine = 2 sine then cose+ sine = 1) 2 cose values of x betwen 0° and 360° with a<B, 2) 2 sine then 4) 2sin@ 2) B= 20° + a 3) 2cose 1) B=180°-a 28 The quadratic equation whose roots are sin'18° 4) B= 5a-20° 3) B= 4a+ 40° 1) 16x- 12x +1 = 0 2) 16x + 12x +1 = 0 38. Which of the following inequalities is true ? 3) 16x- 12x- 1 = 0 4) 16r + 10x + 1 = 0 and cos 36° is 1) sin 10 > 0, cos 8 >0 2) sin10 < 0, cos 8> 0 29. sin 55°-sin 190 +sin 53° – sin 17° = 2) cos 1° %3D 3) sin 10 < 0, cos 8 <0 1) sin 1° 4) sin 10 > 0, cos 8<0 55 3)-sin 1° 4)-cos 10 AKASH FAST TRACK CRD 3/2 2) 3/5

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