find the value of x to the nearest tenth.

Question

anonymous · Answer

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anonymous · Answer

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anonymous · Answer

$sin \theta=\frac{opposite}{hypoteneuse}$

$cos\theta=\frac{adjacent}{hypoteneuse}$

$tan\theta=\frac{opposite}{adjacent}$

So to find the angle to a given right angled triangle problem we employ one of these equation to find the unknown. Does that make sense?

anonymous · Answer

|dw:1365731914869:dw|For example in this diagram, if I wanted to find the side x and I new the angle a and the length of the hypoteneuse, what formula do you think I would use?

anonymous · Answer

a2 + b2 = c2?

anonymous · Answer

Ok that is Pythagoras' Theorem which is useful if you know the lengths of the 2 other sides, but let's pretend that we only know an angle and a length and we want to find another length.

For example|dw:1365732154294:dw|If we know that the hypoteneuse is 10 and the angle of a is 30 degrees we must use one of the formula above. Does that make sense?