EASA NAV(A)intermediate
Select ALL correct relationships using the conventional east-positive sign convention.
Answer
MC = TC − VAR, MH = CH + DEV, MC = MH − WCA
Explanation
With east variation treated as positive, convert true to magnetic by subtracting variation: $MC=TC-VAR$. Since $MH=CH+DEV$, compass heading converts to magnetic heading by adding deviation. Subtract WCA from magnetic heading to obtain magnetic course. **Key takeaway:** Apply each correction at the correct reference-north step.\n\n**Glossary:** **MC**: magnetic course; **MH**: magnetic heading; **CH**: compass heading.
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