Solve system of equation using elimination by addition. Will give brainliest!!
1 answer:
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Answer:
464 feet
Step-by-step explanation:
<em>The Sine of the angle of inclination gives the increase in altitude.</em>
<em>This is because the Sine of an angle is equal to the Opposite side divided by the Hypotenuse side. i.e</em>
Sin Ф = Opposite ÷ Hypotenuse
Sin 5° = O ÷ 5328
0·08716 = O ÷ 5328
<em>Make </em>O<em> the subject and multiply every fraction by </em>5328
(0·08716/1 × 5328)= (O/5328 × 5328)
464·388 = O
∴ The increase in altitude is 464·388 feet
<em>This is supposed to be to the nearest foot so we round off</em>
464·388 becomes 464 feet
Answer:
Step-by-step explanation:
Use the formula for the area of a triangle,
Area of a triangle =
7). Area of the triangle =
= 74 km²
8). Area of the triangle =
= 30.8 cm²
9). Area of the triangle =
= 56 m²
10). Area of the triangle =
= 42.35 km²