Exact expressions from cosine ratios

Exact expressions from cosine ratios

Secondary 2

3 marks

TGM Original Questions

If \(\cos y^\circ=8/17\), where \(y\) is acute, find \(\tan(90^\circ-y^\circ)\)[3]

Solution:

Solution locked

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.

Create free account Sign in Get the E Math course · from S$29.98/mo E Math tuition

Create a free account to practise similar questions.

Create free account Sign in Get the E Math course · from S$29.98/mo E Math tuition

Answer:\(\tan(90^\circ-y)=\dfrac8{15}\).

Need help? Join our E-Maths tuition for O-Level success.