Question

If sin A – cos A = 0, then the value of sin4 A + cos4 A is​

Answer 1

Sin A - Cos A = 0

Sin45° - Cos45° = 0

then

Sin⁴A + cos⁴A

= sin⁴45° + cos⁴45°

= (1/√2)⁴ + (1/√2)⁴

= 1/4+ 1/4

= 2/4

= 1/2

= 0.5

If sin A - cos A = 0, then the value of sin⁴ A + cos⁴ A is 1/2 or 0.5 :)