Question

If √2 sinΦ = 1, find the value of sec²Φ - cos²Φ.​

Answer 1

Step-by-step explanation:

sin Φ = 1/√2

sin Φ = sin 45°

so,

sec² 45° - cos² 45°

= (√2)² - (1/√2)²

= 2 - 1/2

= 3/2

Answer 2

Kindly refer the attachment.....

Mark as brainliest......✌✌