Is p=7 a solution of the equation 4p - 5 =16
2 answers:
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The area of a triangle = 
× the length of one side × the length of another side × sin(the angle between these two sides). For our example, because we know one side = 10 and the angle is 30° we will use these in our formula for 'easyness'.
Area of triangle =
where <em>A</em> is the angle in-between the two sides <span>b</span> and <span>c</span><em>.</em> (b=10, A = 30°, c=???)
We need to find <em>c</em> on your diagram and then we can use the formula above. We can use the sine rule to find the length of side <em>c</em>.
We know the angles in a triangle add up to 180° which means angle <em>C</em> must equal 180° - 45° - 30° = 105° so
side <em>c</em> = 13.66 so
Area = 34 square units (to nearest square unit)
Area of triangle =
We need to find <em>c</em> on your diagram and then we can use the formula above. We can use the sine rule to find the length of side <em>c</em>.
We know the angles in a triangle add up to 180° which means angle <em>C</em> must equal 180° - 45° - 30° = 105° so
side <em>c</em> = 13.66 so
Area = 34 square units (to nearest square unit)