Question

if tan=2,evaluate sec A. sin A+tan square A -cosec A

Answer 1

tanA = 2

sinA/cosA = 2/1

sin A = 2, cosA = 1

cosec A = 1/2 , sec A = 1

secA . sinA +tan²A -cosecA

= 1.2+2²-(1/2)

= 2+4-(1/2)

= 6- 1/2

= (12-1)/2

= 11/2