Question

Find the value of the angle 8 rounded to 1 DP.

0
31°
→ 0 = |
The diagram is not drawn accurately.
42m
0
11m

Answer 1

The answer for 0 is 12.7° to 1d.p or approximately 13°

Explanation:

cos31=42/x

xcos31=42

divide both sides by cos31

xcos31/cos31=42/cos31

x=48.998m

x≈49m

tan0=opp/adj

tan0=11/49

0=tan‐¹(11/49)

0=12.65°

0=12.7° to 1 d.p

0≈13°