InThinking Subject Sites

Subscription websites for IB teachers & their classes

Find out more


Sitemap
Recommendations
Other subjects
Brochure

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Student access tools
 You need to log-in or subscribe in order to use Student access.

P.o.t.W. #10

■ No GDC ■for SL and HL studentsConsider an isosceles triangle with the characteristics shown in the figure below where the angle marked \(\theta \) is between the two equal sides of length \(x\), and opposite the side of length \(a\).Find two different methods (ways) to show that \(\cos \left( {\frac{\theta }{2}} \right) = \sqrt {1 - \frac{{{a^2}}}{{4{x^2}}}} \).PDF: P.o.t.W. #10

To access the contents of this site, you must subscribe.