11. Describe and correct the error in evaluating the expression. –21-7)= -14
1 answer:
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<u>Given</u>:
Given that RST is a right triangle.
The measure of ∠R is 35°.
The length of ST is 12 units.
The length of the hypotenuse is t units.
We need to determine the value of t.
<u>Value of t:</u>
The value of t can be determined using the trigonometric ratio.
Thus, we have;
where , the side opposite to ∠R is ST and hypotenuse is SR.
Substituting these values, we get;
Substituting ST = 12 and SR = t, we get;
Simplifying, we get;
Thus, the value of t is 20.9 units.