The value of x in the triangle is (a) 22
<h3>How to solve for x?</h3>
The complete question is in the attached image.
From the attached image of the triangle, we have:

Evaluate sin(45)

Solve for x

Divide
x = 22
Hence, the value of x is (a) 22
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Answer:
3x + 21 is your answer
Step-by-step explanation:
3(x+7)
3 × x = 3x
3 × 7 = 21
3x = 21
Answer:
∠ STR = 64°
Step-by-step explanation:
Since RS = ST then the triangle is isosceles and the base angles are congruent, that is
∠ STR = ∠ SRT , then
∠ STR =
=
= 64°