Question

nple If cos 0 + sec 0 = 2, the value of cos6 0 + sec6theta. is SSC (h​

Answer 1

Step-by-step explanation:

cos x + sec x = 2

=> cos x + 1/cos x = 2

=> cos²x + 1 / cos x = 2

=> cos²x + 1 = 2 cos x

=> cos²x - 2 cos x + 1 = 0

=> (cos x - 1)² = 0..

.

=> cos x - 1 = 0

=> cos x = 1

=> cos x = cos 9

therefore x = 0°

therefore cos 6x + sec 6 x =>

=> cos 6*0 + sec 6*0 => cos 0° + sec 0°

=> 1 + 1 => 2