Question

If r=7 and s=10, find R. Round your answer to the nearest tenth.

Answer 1

= 35 °

Explanation:

Using trigonometric ratio tangent

Tangent = opposite/adjacent

Tan R = r/s

Tan R = 7/10

Therefore;

R = Tan⁻¹ (7/10)

R = 34.99

= 35 °

Answer 2

The correct answer is option a. 35.0°

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°