Posted by edward on Friday, July 26, 2013 at 11:40pm.
prove that 4cos36+cot15/2=1+4+9+16+25+36,ifcot15/2 is1+cos15/+sin15

maths  Steve, Saturday, July 27, 2013 at 12:04am
Aside from the carelessness with parentheses, the statement as written is obviously preposterous, since cos(x) < 1 for any x, and cot(15/2) < 8.
Answer This Question
Related Questions
 Herndon High  cos15°cos30° sin15°sin30° =
 trig  Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...
 maths  If the sum of the squares of the roots of the quadratic equation ax^2 + ...
 Math  How do you find cos15
 Maths  The sum of a two digit number is 8 .The digit in the units palce is1 ...
 Advanced Maths (Vectors) AQA Level  Triangle ABC with D, E and F the midpoints ...
 Advanced Maths (Vectors) AQA Level  Triangle ABC with D, E and F the midpoints ...
 Mathematics  How can I evaluate the expression below without using calculator? ...
 Maths  X and Y are points on the sides BC and AC of a triangle ABC respectively...
 DISCRETE MATHS  Prove that for every set S, Ø \subseteq( S. i need to Use ...
More Related Questions