Question

please help me..........​

Answer 1

1.6666

Step-by-step explanation:

by pythagoras theorem,

(20)²= (16)²+ (opposite side)²

400= 256+ (opposite side)²

(opposite)² side =400-256

(opposite side)² = 144

Taking square root of both the sides

opposite side = 12

cosec theta = hypotenuse / opposite side

= 20/16

=1.66666