Question

find the value of 3 tan square 26 degree -3 cosec square 64 degree

Answer 1

$3 { \tan }^{2} 26 - 3 { \csc }^{2} 64 = 3 { \ \cot }^{2} 64 - 3 { \csc}^{2}64 = 3( { \cot}^{2} 64 - { \csc}^{2} 64) = - 3$