Step-by-step explanation:
1. draw the parallelogram with side 20cm and 25cm respectively and also the diagonal as well.
2.Clearly it forms a triangle in the parallelogram with three known lengths of side.
3.Using the cosine rule : c^2=b^2+c^2 -2bc cos c to find the obtuse angle.
Answer:
50 dollors
Step-by-step explanation:
Answer:
5-√9/4 4-3√-16 3+2√-9➗7
Step-by-step explanation:
