Question

tell this answer please​

Answer 1

Answer:

1

Step-by-step explanation:

(1+tan²∅)cos²∅

we know that ,

1+tan²∅ = sec²∅

now ,

(1+tan²∅)cos²∅

= sec²∅ * cos²∅

= 1/cos²∅ * cos²∅

= 1

hope it helps.