Question

Pls help 50 points for anyone who answers all questions right

Answer 1

5)Rectangular ABC in C

Pythagore's theorem

AC²=AB²+x²

25²=7²+x²

x²=25²-7²

x=V576 = 24

6)cosB=BC/AB

7) cosB=BC/AB=8/17

4)sinB=AC/AB

Explanation: