Question

If a = cos 3 and b=sin 8 then 1) a>0, b>02) abb 4) ab >0​

Answer 1

Answer:

a>0 is the answer

Step-by-step explanation:

hope it helps

Answer 2

Answer:

Correct option is

B

ab<0

1

c

=57

o

∴3

c

≈171

o

& 8

c

≈456

o

a≈cos(171)≈cos(90+81)≈−cos81

b≈sin(456)≈sin(450+6)≈sin6

as we can see that a and b are different signholders, so ab<0