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gavmur [86]
3 years ago
9

Ismail tried to prove that sin(θ) = cos(90°− θ) using the following diagram. His proof is not correct.

Mathematics
1 answer:
Anton [14]3 years ago
5 0

Answer:

  • C. Ismail used the wrong sides in his ratio for cos (90 - θ)

Step-by-step explanation:

<u>All steps correct apart from:</u>

  • cos (90° - θ) = AC/BC

<u>It should be</u>

  • cos (90° - θ) = AB/BC

Correct choice is C

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