Answer:
(C)
Step-by-step explanation:
Given: In ΔABC, AD⊥BC.
To prove:
Proof:
Statement Reason
1. In ΔABC, AD⊥BC. Given
2. In ΔADB, Definition of sine
3. Multiplicative property of equality
4. In ΔACD, Definition of sine
5. Multiplicative property of equality
6. Substitution
7. Division property of equality.
Hence proved.
Therefore, option C is correct.
2x^3 + 2x^2 + 5x + 1/ x^2
x= +2, -2
hope it helps you
i can only say that you should use this forumla, the sins law
sin(a)/A = sin(b)/B = sin(c)/C