Evaluate without calculating `52^(2)`.

Evaluate the following: ^(52)C_(52)

Evaluate the following: \ ^(52)C_(52)

Calculate the value of the following without using a calculator. (15)^(2)

Calculate the value of the following without using a calculator. (-60)^(2)

Evaluate without using triignometric tables,** "sin"^(2)28^(@)+"sin"^(2)62^(@)+"tan"^(2)38^(@)-"cot"^(2)52^(@)+1/(4)"sec"^(2)30^(@)

Ravi calculated 29xx51 and wrote the answer as 1079. Without calculating. Can you find if the answer is correct or not?

Calculate the value of the following without using a calculator. (1""3/8)^(2)

Find the square root of each of the following numbers, without the use of calculator. 16

Find the value of each of the following, without the use of calculator. sqrt(121)

Without using Trigonometric Tables evaluate the following :- (sec^2 54^@-cot^2 36^@)/(cosec^2 57^@-tan^2 33^@) +2sin^2 38^@ sec^2 52^@-sin^2 45^@ .