Answer:

Step-by-step explanation:
Recall the mnemonics SOH CAH TOA.
SOH means the Sine ratio is Opposite over Hypotenuse.
This implies that;

The side opposite to angle A is 4cm and the hypotenuse is 5cm.

Answer:
6 cm. triangles have 3 sides, and total length is 18 cm. divide 18 by 3 equal sides to get 6 cm
Answer:
1408 multiply 64 by 22 for a total of 1,408
300% if 5 is 15. 30% of 5 is 1.5 not 15. That is an error. Hope this helps!