Posted by Maram on Tuesday, April 19, 2011 at 12:18pm.
In right triangle ABC below, what is the sine of <A?
TRiangle has 7 cenimeters and 24 centimeters

algebra 1  MathMate, Tuesday, April 19, 2011 at 1:42pm
If the triangle had sides 7 and 24 adjacent to the right angle, then the hypothenuse is sqrt(7^2+24^2)=25 by Pythagoras theorem.
The sin of angle θ adjacent to the side 7 has an opposite side of 24 over the hypothenuse of 25, so
sin(θ)=24/25.
Similarly, the sin of the angle φ is the opposite side 7 divided by the hypothenuse of 25 to give 7/25.

algebra 1  Maram, Tuesday, April 19, 2011 at 3:40pm
thank u
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