Question

13. If sin e + cos e = 1 then find the value of sin e.cos e.​

Answer 1

sin e + cos e = 1

now,

(sin e + cos e)² = 1²

sin e² + cos e² + 2 sin e. cos e = 1

1 + 2 sin e. cos e = 1

2 sin e . cos e = 0

sin e . cos e = 0