Question 10 - A-Level Maths

Point \(A\) on the curve has coordinates ( \(a , 0.5\) )
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1. Find the value of \(a\)
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(ii) State the value of \(\sin \left( 180 ^ { \circ } - a ^ { \circ } \right)\)
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Point \(B\) on the curve has coordinates \(\left( b , - \frac { 3 } { 7 } \right)\)
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1. Find the exact value of \(\sin \left( b ^ { \circ } - 180 ^ { \circ } \right)\)
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(ii) Find the exact value of \(\cos b ^ { \circ }\)