Question

if sin x=4/5 then 1+ tan^2x=​

Answer 1

Answer:

25/9

Step-by-step explanation:

1 + tan²x = sec²x = 1/cos²x

cos x = 3/5 [ by drawing triangle and putting up the values we find the third side and cos value ]

Hence, 1/cos²x = 1 / (3/5)² = 25/9