A sum with conjugate denominators
A sum with conjugate denominators
4 marks
TGM Original
Prove that 11-sin x+ 11+sin x=2sec2x, wherever both sides are defined. State the restrictions on x.
Solution:
Solution locked
680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs tuition enrolment.
Create a free account to practise similar questions.
Answer:\(\frac1{1-\sin x}+\frac1{1+\sin x}=2\sec^2x\), for \(\cos x\ne0\).
Need help? Join our JC Math tuition classes.
Learn more