OCR MEI C2 — Question 7

Exam BoardOCR MEI
ModuleC2 (Core Mathematics 2)
TopicTrig Equations
7 You are given that \(\tan \theta = \frac { 1 } { 2 }\) and the angle \(\theta\) is acute. Show, without using a calculator, that \(\cos ^ { 2 } \theta = \frac { 4 } { 5 }\).
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