Find the value of x in the figure above
- A. 20√3
- B. 4√3
- C. 5√3
- D. 10√3
This means we are free to use SOHCAHTOA to find x.
Tan θ = opposite/adjacent
Tan 60 = x/10
But tan 60 = √3
√3 = x/10
10√3 = x
Now for the right answer to the above question:
- Option A is incorrect.
- Option B is incorrect.
- C is incorrect.
- D is the correct answer.
You may please note these/this:
- SOHCAHTOA is never to be applied to any triangle which has none of its angle as 90 degree.
- Angles with a 90 degree is often called right angled triangle.
- Again, only right-angled triangle is qualified to be resolved with SOHCAHTOA.
- Any triangle which has none of its angles as 90 degree should be analyzed with sine or cosine rule.
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/ culled from 2015 JAMB-UTME mathematics past question 5 /