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Using a Calculator

Use your calculator to work out $sin⁡25∘+cos⁡k∘cos⁡25∘−sin⁡k∘\displaystyle \frac{\sin 25^\circ + \cos k^\circ}{\cos 25^\circ - \sin k^\circ}$

Show that your answer can be written as $cot⁡(65−k2)∘\displaystyle \cot\left(\frac{65-k}{2}\right)^\circ$ .

[2]

Use your calculator to work out the value of your answer when $k = 40$ , correct to 2 decimal places.

[1]

Using a Calculator Questions

192 exam-style questions on OCR GCSE Maths Using a Calculator. Each one has a worked solution and a mark scheme showing where the marks go.

Using a Calculator

Question bank

Use your calculator to work out $sin⁡25∘+cos⁡k∘cos⁡25∘−sin⁡k∘\displaystyle \frac{\sin 25^\circ + \cos k^\circ}{\cos 25^\circ - \sin k^\circ}$

Show that your answer can be written as $cot⁡(65−k2)∘\displaystyle \cot\left(\frac{65-k}{2}\right)^\circ$ .

[2]

Use your calculator to work out the value of your answer when $k = 40$ , correct to 2 decimal places.

[1]

192 exam-style questions on OCR GCSE Maths Using a Calculator. Each one has a worked solution and a mark scheme showing where the marks go.