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3 years ago

Nevermind, i solved my problem

Mathematics

1 answer:

bezimeni [28]3 years ago

8 0

Answer:

What was the problem?

Step-by-step explanation:

Oh ok , I G u e s s it is solved already.

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Look at the triangle show on the right. The Pythagorean Theorem states that the sum of the squares of the legs of a right triang

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Answer:

$cos^2\theta + sin^2\theta = 1$

Step-by-step explanation:

Given

$(\frac{b}{r})^2 + (\frac{a}{r})^2$

Required

Use the expression to prove a trigonometry identity

The given expression is not complete until it is written as:

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = (\frac{r}{r})^2$

Going by the Pythagoras theorem, we can assume the following.

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So, we have:

$Sin\theta = \frac{a}{r}$

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Having said that:

The expression can be further simplified as:

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = 1$

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