Question

don't give faltu answer plzzzz​

Answer 1

cos 45°=one /square root 2

sin 0°=0

sin 30°=one / two

sin 45°=one / square root

sin 90°=1

putting these value in in given question we get

1/2 - 0 - 1/2 + sqrt2 - 1

sqrt2 -1

Answer 2

Answer:

here your answer.................