Given Sin (90 – a) = 1/2 , find without using tables or calculators the value of Cos a.

Given Sin (90 – a) = 1/2 , find without using tables or calculators the value of Cos a.

how do I do this without a calculator : r/maths

Given Sin (90 – a) = 1/2 , find without using tables or

Answered: .1 Without the use of tables or a…

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