Question

Sin 45° - Cos 45° + 2 Cos 0°​

Answer 1

Answer:

sin 45° = 1/ underoot 2

cos 45° = 1/ underoot 2

2cos 0°= 2×1

1/ underoot 2 - 1/ underoot 2+2

(plus and minus 1/ underoot 2 cancel and +2 left)

=2

therefore, 2 answer