Question

4(sin⁴ 30° + cos⁴ 60°)-3(cos² 45° – sin² 90°)+5 cos² 90°​

Answer 1

Answer:

Step-by-step explanation:

sin30=1/2

cos60=1/2

cos45=1/sqrt(2)=sin45

sin90=1

cos90=0

now

4(1/16+1/16)-3(1/2-1)+5*0

=4(2/16)-3(-1/2)

=1/2+3/2

=2