COMPOUND ANGL cos 90 0. A= cos9 +sin 905= order is -sin90 cos21 +sin21 cos21 -sin...
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COMPOUND ANGL cos 90 0. A= cos9° +sin 905= order is -sin90 cos21" +sin21" cos21° -sin 21 and C=tan 20° + tan 40° + V3 tan 20° tan 40° then descen. 1) A, В, С 2) В, С, А 3) С, А, В 4) С, В, А 1. If tan(n cos 0) = cot(t sin 0).0<0<2 then sin 0+ 4. 1 1 2) 1) 3) 2/2 4) 2/2 2. If cos(0-a) = a,cos(0-B)= b, then sin (a-B)+2abcos(0-B) =D 1) a +b 2) a-b2 3) b-a 4) -a - 62 3. In any triangle ABC, sin A-sin B+sin C is always equal to 1) 2 sin A sin BcosC 2) 2 sin A cos B sin C 3) 2 sin A cos B cosC 4) 2 sin Asin Bsin C 4. If cos A+cos B+cos C = 1, then AABC is 1) equilateral 2) isosceles 3) right angled 4) right angled isosce 5. If 2 sec 20 = tan o + cot d, then one of the valucs of 0+ộ is 1) T/2 2) π/4 3) t/3 4) π/6 6. Match the following: List -I List -II 1) cot +0 cot a) 0 2) sin(45° +0) - cos(45° -0) b) tan 56° cos 11° +sin11° 3) cos 11° - sin11° c) 4) sin 75°-sin 15° d) 1 1) 1-d, 2-a, 3-b,4-c 2) 1-a,2-b,3-c,4-d 3) 1-c,2-b,3-d,4-c 4) 1-b.2-c,3-a,4-d m+n 7. Statement I: If mcos(0 +a) = ncos(0- a) then tan0. tan O = thas m -1 sin(a + B) a+b sin(o -B) a-B Which of the above statements is correct? then tan o.cotß= b. Statement II : If 1) Only I 2) Only II 3) Both I and II 4) Neither I nor II 8. Statement I : If xcose = yeos(120° +0) =zcos(0+240") then xy+yz+x2 = 0 Statement II: If cos+cos(120" +) + cos(120" - 0) = 0 Then which of the above statements is/are correct ? 1) Only I 2) Only II 3) Both I&II 4) Neither I nor II COMPOUND ANGL cos 90 0. A= cos9° +sin 905= order is -sin90 cos21" +sin21" cos21° -sin 21 and C=tan 20° + tan 40° + V3 tan 20° tan 40° then descen. 1) A, В, С 2) В, С, А 3) С, А, В 4) С, В, А 1. If tan(n cos 0) = cot(t sin 0).0<0<2 then sin 0+ 4. 1 1 2) 1) 3) 2/2 4) 2/2 2. If cos(0-a) = a,cos(0-B)= b, then sin (a-B)+2abcos(0-B) =D 1) a +b 2) a-b2 3) b-a 4) -a - 62 3. In any triangle ABC, sin A-sin B+sin C is always equal to 1) 2 sin A sin BcosC 2) 2 sin A cos B sin C 3) 2 sin A cos B cosC 4) 2 sin Asin Bsin C 4. If cos A+cos B+cos C = 1, then AABC is 1) equilateral 2) isosceles 3) right angled 4) right angled isosce 5. If 2 sec 20 = tan o + cot d, then one of the valucs of 0+ộ is 1) T/2 2) π/4 3) t/3 4) π/6 6. Match the following: List -I List -II 1) cot +0 cot a) 0 2) sin(45° +0) - cos(45° -0) b) tan 56° cos 11° +sin11° 3) cos 11° - sin11° c) 4) sin 75°-sin 15° d) 1 1) 1-d, 2-a, 3-b,4-c 2) 1-a,2-b,3-c,4-d 3) 1-c,2-b,3-d,4-c 4) 1-b.2-c,3-a,4-d m+n 7. Statement I: If mcos(0 +a) = ncos(0- a) then tan0. tan O = thas m -1 sin(a + B) a+b sin(o -B) a-B Which of the above statements is correct? then tan o.cotß= b. Statement II : If 1) Only I 2) Only II 3) Both I and II 4) Neither I nor II 8. Statement I : If xcose = yeos(120° +0) =zcos(0+240") then xy+yz+x2 = 0 Statement II: If cos+cos(120" +) + cos(120" - 0) = 0 Then which of the above statements is/are correct ? 1) Only I 2) Only II 3) Both I&II 4) Neither I nor II
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