Q54.If 32 sin 2α−1, 14 and 34−2 sin 2α are the first three terms of an A.P. for some α , then the sixth term of this A.P. is (1) 66 (2) 81 (3) 65 (4) 78
What This Question Tests
This question requires using the property of three terms in an AP to form an equation, solving it for an intermediate variable, and then calculating the sixth term of the AP.
Concepts Tested
Formulas Used
2b = a + c (if a,b,c are in AP)
a_n = a + (n-1)d
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📋 Question Details
- Chapter
- Sequences & Series
- Topic
- Arithmetic Progression (AP)
- Year
- 2020
- Shift
- 05 Sep Shift 1
- Q Number
- Q54
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 9: Sequences and Series
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