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Year 12 Maths - Methods (Unit 3 & Unit 4) Circular (trigonometric) functions

Further symmetry properties and the Pythagorean identity

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Questions
Question 1
198319

Recall the Pythagorean identity \(\sin^{2}x+\cos^{2}x=1\).

(i) State the value of \(\sin^{2}x+\cos^{2}x\).
(ii) Given that \(\cos x=0.6\), find the value of \(\sin^{2}x\).
Part a:
1
1 mark
Part b:
0.64
 (2 d.p) 1 mark

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