Question

please give me the answers to the picture please it's urgent please​

Answer 1

Step-by-step explanation:

1+tan square = sec square

1+(8/15)square=sec square

1+ 64/225 = sec square

225+64/225 = sec square

289/225 = sec square

17/15 = sec

now,

1/sec = cos

cos = 15/17