Question

WILL MARK BRAINLIEST
The picture shows a triangular island
Which expression shows the value of c?
b/tan 45°
b/COS 45°
a cos 45º
a tan 45°

Answer 1

Answer: Second choice. b/cos(45)

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Work Shown:

cos(angle) = adjacent/hypotenuse

cos(45) = b/c

c*cos(45) = b

c = b/cos(45)

In the third step, I multiplied both sides by c. Afterward, I divided both sides by cos(45) to isolate c.

Answer 2

Answer:

ans: b/cos45

Step-by-step explanation:

as we know that cos45=b/c

then, c/b=1/cos45

therefore, c=b/cos45