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(#M40034511) MATHS QUESTION Keep an EYE Keep an eye puzzle Keep an eye puzzle

If cos2A + cos2B + cos2C = 1 then ABC is a
(a) Right angle triangle
(b) Equilateral triangle
(c) All the angles are acute
(d) None of these

Asked In Maths (11 years ago)
Unsolved Read Solution (2)
Is this Puzzle helpful?   (8)   (5) Submit Your Solution Trigonometry

(#M40157008) MATHS QUESTION mensuration Keep an EYE Keep an eye puzzle Keep an eye puzzle

The area of a circle inscribed in an equilateral triangle is 346.5 cm^2. Find the perimeter of the triangle. (Use Pi = 22/7 and Sqrt3 = 1.73).

Asked In Maths J PRIYADHARSHINI (9 years ago)
Unsolved
Is this Puzzle helpful?   (0)   (2) Submit Your Solution Trigonometry
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