
Concept explainers
a
To measure
a

Answer to Problem 16PTTS
Explanation of Solution
Given information:
Formula used:
Sum of all interior angle of a right angle
Calculation:
Substituting the values of angle B and C in the formula
Calculating the value of angle A
b.
To calculate length of
b.

Answer to Problem 16PTTS
Explanation of Solution
Given information:
Formula used:
Calculation:
The angle of sine ratio is
Substituting it in the sine expression
Substituting value of hypotenuse and sine ratio in the formula
Using cross multiplication method value of AC is
c.
To calculate length of
c.

Answer to Problem 16PTTS
Explanation of Solution
Given information:
Formula used:
Calculation: The angle of cosine ratio is
Substituting it in the cosine expression
Substituting value of hypotenuse and cosine ratio in the formula
Using cross multiplication method
Calculating value of the above expression
d.
To prove :
To verify length of
d.

Explanation of Solution
Given information :
Formula used :
Proof:
Using formula,
Substituting values of AC and BC in the formula
Calculating
Finally,
Hence, using tangent ratio the length of AC and BC are verified
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ELEMENTARY+INTERMEDIATE ALGEBRA
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