Question

Co sec 2 A = sec(A + 75°), solve 2 A

Answer 1

Answer:

sec      -cosec

Step-by-step explanation:

Answer 2

Answer:

cosec2A = sec( A + 75°)

=> sec( 90 -2A) = sec( A + 75°)

on comparing both sides,

90 - 2A = A + 75

=> 90 - 75 = A + 2A

=> 15 = 3A

=> A = 15/3 = 5

so,

2A = 2 ×15 = 30°.

$..$

formula used;

sec( 90- ∅) = cosec∅.