sin(45+ø)-cos (45-ø)=
Answers
Answered by
1
I don't have sign for theta so I'll instead use an O
sin(45+O)-cos(45-O)
=sin45 + sinO- cos45 + cosO (Expand it)
=sin45-cos45 + sinO +cosO
=1/✓2-1/✓2 + 1 ( So here sin45 and cos45 has the value of 1/✓2 and sinO+cosO = 1 is a identity)
=0+1
=1
Therefore ans is 1
sin(45+O)-cos(45-O)
=sin45 + sinO- cos45 + cosO (Expand it)
=sin45-cos45 + sinO +cosO
=1/✓2-1/✓2 + 1 ( So here sin45 and cos45 has the value of 1/✓2 and sinO+cosO = 1 is a identity)
=0+1
=1
Therefore ans is 1
Similar questions