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

What is the first mistake in Ismail's proof?

Ismail tried to prove that sinθ cos90 θ using the following diagram His proof is not correct What is the first mistake in Ismails proof class=
Ismail tried to prove that sinθ cos90 θ using the following diagram His proof is not correct What is the first mistake in Ismails proof class=

Respuesta :

mhanifa

Answer:

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

Step-by-step explanation:

All steps correct apart from:

  • cos (90° - θ) = AC/BC

It should be

  • cos (90° - θ) = AB/BC

Correct choice is C

Answer:

c

Step-by-step explanation:

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