Question

find value of 3tan²26-3cosec²64

Answer 1

$3tan^{2} 26 - 3cosec ^{2} 64 =$
3 cot^2(90-26)-

Answer 2

tan²∅ = sec²∅ - 1

Now,

$3 {tan}^{2} 26 - 3 {cosec}^{2}64$

$= \: 3 { \sec }^{2} 26 - 3 - 3{cosec}^{2} 64$

$= \: 3 {cosec}^{2} 64 - 3 - 3 {cosec}^{2} 64$

$= \: - 3$

$................ \: ANS$

______☺☺☺_______