Answer:
B
Step-by-step explanation:
2.8*4.5
=12.6
12.6*6
=75.6
Answer:
a
Step-by-step explanation:
If you have
2 KNOWN sides & 1 Angle ;
Use Cosine Rule
If you have 3 KNOWN sides,
Also Cosine Rule
If you have
2 KNOWN angles & 1 side,
Use SINE rule
If it's a right-angled triangle, use SOH CAH TOA
Hopefully this helps
