Hence solve the equation $$\(\frac{1+\sin \theta}{\cos \theta}+\frac{\cos \theta}{1+\sin \theta}=\frac{3}{\sin \theta}\)$$, for $$\(0 \leqslant \theta \leqslant 2 \pi\)$$. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................
Exam No：9709_s20_qp_11 Year：2020 Question No：7(b)
Answer:
\[
\frac{2}{\cos \theta}=\frac{3}{\sin \theta} \rightarrow \tan \theta=1.5
\]
\[
\theta=0.983 \text { or } 4.12
\]
(FT on second value for 1st value \(+\pi\) )
\frac{2}{\cos \theta}=\frac{3}{\sin \theta} \rightarrow \tan \theta=1.5
\]
\[
\theta=0.983 \text { or } 4.12
\]
(FT on second value for 1st value \(+\pi\) )
Knowledge points:
1.5.5 find all the solutions of simple trigonometrical equations lying in a specified interval (general forms of solution are not included).
Solution:
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