Concept explainers
(a)
To find: the cosine of a given
(a)
Answer to Problem 19CR
The cosine of the angle J is 0.9231
Explanation of Solution
Given information:
A right
Formula used:
In a right triangle the cosine of the angle is the ratio of the measure of side adjacent to the angle to the hypotenuse.
It can be expressed as,
Calculation:
Based on the figure, cosine of the angle J can be expressed as,
(b)
To find: the sine of a given angle
(b)
Answer to Problem 19CR
The sine of the angle K is 0.9231
Explanation of Solution
Given information:
A right triangle with a given measure of three sides .
Formula used:
In a right triangle the sine of the angle is the ratio of the measure of side opposite to the angle to the hypotenuse.
It can be expressed as,
Calculation:
Based on the figure, sine of the angle K can be expressed as,
(c)
To find: a given angle
(c)
Answer to Problem 19CR
The angle K is 670
Explanation of Solution
Given information:
A right triangle with a given measure of three sides .
Formula used:
In a right triangle the sine of the angle is the ratio of the measure of side opposite to the angle to the hypotenuse.
It can be expressed as,
Calculation:
Based on the figure, angle K can be expressed as,
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