An altitude is drawn from the vertex of an isosceles triangle, forming a right angle and two congruent triangles. As a result, t
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Answer:
- cos(A) = 3/5
- cos(B) = 0
- cos(C) = 4/5
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you of the relation between the cosine of an angle and the sides of the triangle.
Cos = Adjacent/Hypotenuse
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<h3>Angle A</h3>In the given triangle, the hypotenuse is AC. The side adjacent to angle A is AB, so its cosine is ...
cos(A) = AB/AC
cos(A) = 3/5
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<h3>Angle B</h3>The right angle in the triangle is angle B. The cosine of a right angle is 0.
cos(B) = 0
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<h3>Angle C</h3>The side adjacent to angle C is CB, so its cosine is ...
cos(C) = CB/AC
cos(C) = 4/5
<h3>a) 
</h3><h3>■Dividing a positive and a negative equals a negative: (+)÷(-)=(-)</h3><h2>
</h2><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3><h2>
</h2><h3>■Multiply the fractions</h3><h2>
</h2><h3>Hence, Quotient =</h3><h3>b) 
</h3><h3>■Convert the decimals into a fractions</h3><h2>
</h2><h3>■Dividing a positive and a negative equals a negative: (+)÷(-)=(-)</h3><h2></h2><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3><h2></h2><h3>■Multiply the fractions</h3><h2></h2><h3>Hence, Quotient is </h3><h3>c)</h3><h3>■To divide by a fraction, multiply by the reciprocal of that fraction</h3><h2></h2><h3>■Multiply the fractions</h3><h2></h2><h3>Hence, The Quotient is </h3>