Answer:
b = 14[tex]\sqrt{2}[/tex]
Step-by-step explanation:
Since the triangle is right use the cosine ratio to find b
cos45° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{b}{28}[/tex]
Multiply both sides by 28
28 × cos45° = b
28 × [tex]\frac{\sqrt{2} }{2}[/tex] = b ( cancel the 28 and 2 )
b = 14[tex]\sqrt{2}[/tex]
Answer:
14√2.
Step-by-step explanation:
This is a 45-45-90 triangle so the ratio of the sides is 1:1:√2. ( By the Pythagoras theorem).
so b / 28 = 1 / √2
√2 b = 1*28
b = 28 / √2
= 28√2 / 2
= 14√2 answer.
