Question

what is the missing justification in the proof of the Pythagorean identity, sin^2x+cos^2x=1 using a right triangle?

Answer 1

The justification that is missing in the following table is:

option: D Pythagorean Theorem

Explanation:

Pythagorean Theorem states that in a right angled triangle if , 'a' is the perpendicular side, 'b' is the base and 'c' is the hypotenuse then:

a²+b²=c²

Hence, the justification that is missing in the following proof is the use of Pythagorean Theorem as is stated above.

Hence, option: D is the correct answer to this question.

Answer 2

D

Explanation:

Pythagoras theorem ( a^2 + b^2 = c^2)