Answer:
The correct answer is option a. 35.0°
Step-by-step explanation:
From the figure we can see that a right angled triangle RST.
Right angled at T
To find the value of R
It is given that,
r=7 and s=10
Tan R = Opposite side/Adjacent side
Tan R = ST/TR = r/s = 7/10 = 0.7
R = Tan⁻¹(0.7) = 34.99 ≈ 35.0°
Therefore the correct answer is option a. 35.0°
