Plz plz the expression cos(a+pi) - sin(a + pi) can be simplified to
a) sin(a) - cos(a)
...
Mathematics, 23.09.2019 03:30, unknown337
Plz plz the expression cos(a+pi) - sin(a + pi) can be simplified to
a) sin(a) - cos(a)
b) sin(a) + cos(a)
c) cos(a)- sin(a)
d) -sin(a) - cos(a)
Answers: 1
Mathematics, 21.06.2019 21:30, jtorres0520
Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?
Answers: 3
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