Question

Hello help me class 10 plz only for 10​

Answer 1

Step-by-step explanation:

= sin 30*=1/2 cos 30*=√3/2

=cos 45*=1/√2 sin 90*= 1

=4[(1/2)*4 +(√3/2)*4] -3[(1/√2)*2 +1*2]

=4[1/16+9/16] -3[1/2+1]

=4×10/4 -3×3/2

=10/4 -9/2

=10 -18/4

= -8/4

= -2