IN the diagram, |LN| = 4cm, LNM = 90o and tan y = 2/3. What...

Mathematics

WAEC 2007

IN the diagram, |LN| = 4cm, LNM = 90^o and tan y = 2/3. What is the area of the ∆LMN?

A. 24cm²
B. 12cm²
C. 10cm²
D. 6cm²

WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Your School's Whatsapp Group - Join Us now

Correct Answer: Option B

Explanation

\(tan \hspace{1mm}y = \frac{opp}{adj}=\frac{2}{3}\Rightarrow \frac{2}{3}=\frac{
LN}{MN}=\frac{4}{MN}\\
∴ MN = \frac{12}{2}=6\\
Area \hspace{1mm}of \hspace{1mm}\Delta LMN = \frac{1}{2}\times MN\times LN=\frac{1}{2}\times 6\times 4=12cm\)

Previous Next

Go back to Maths classroom

Report an Error Ask A Question Download App

WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Contributions ({{ comment_count }})

Please wait...

{{ settings.no_comment_msg ? settings.no_comment_msg : 'There are no comments' }}

Quick Questions

when is mop up exam starting? Answer this

1 Answers · 2 days ago
what is the cutt off mark for osun state college of nursing science in Asubiaro osun? Answer this

1 Answers · Medical Science · 1 day ago
How can I get better at wave length 😭? Answer this

2 Answers · Physics · 4 days ago

Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts

IN the diagram, |LN| = 4cm, LNM = 90o and tan y = 2/3. What...

Correct Answer: Option B

Explanation

Contributions ({{ comment_count }})

Please wait...

Modal title

Report

Block User

{{ feedback_modal_data.title }}

Quick Questions

Post your Contribution

Sign In