Question

sin 30 degree - cos60 degree-tan^2 45 degree

Answer 1

=sin30°-cos60°-tan²45°
=(1/2)-(1/2)-(1)²
=0-1
=-1

Answer 2

v know that... sin30°=1/2
cos60°=1/2
therefore
sin30-cos60=0
tan45=1
1²=1
therefore
answer =-1