Latest IIT-JEE Aptitude Question SOLUTION: Prove that cos π 14 FH G IK J + cos 3 14 π FH G IK J + cos 5 14 π FH G IK J

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Previous Question: A + B + C = π Prove that, cos2 A + cos2 B + cos2 C = 1 – 2 cosA cosB cosC Next Question: A physical quantity is measured and the result is expressed as nu where u is the unit used and n is the numerical value. If the result is expressed in various units then : (A) n ∝ size of u (B) n ∝ u2 (C) n ∝ u (D) n ∝ u 1

(#M40027345) IIT-JEE question Trigonometric Ratios Keep an EYE

Prove that cos
π
14
FH G
IK J
+ cos
3
14
π FH G
IK J
+ cos
5
14
π FH G
IK J: Asked In IIT-JEE MAN (11 years ago); Unsolved; Is this Puzzle helpful? (0) (1) Submit Your Solution

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Previous Question: A + B + C = π Prove that, cos2 A + cos2 B + cos2 C = 1 – 2 cosA cosB cosC Next Question: A physical quantity is measured and the result is expressed as nu where u is the unit used and n is the numerical value. If the result is expressed in various units then : (A) n ∝ size of u (B) n ∝ u2 (C) n ∝ u (D) n ∝ u 1

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