1.
(a)
Given that
5
4
sin A= and cos B=- where 0°S A 90° and 90° s B s180°....
Mathematics, 17.11.2020 16:20 7rnmartinez
1.
(a)
Given that
5
4
sin A= and cos B=- where 0°S A 90° and 90° s B s180°.
13
5
Where a, b and ceR. Find the values of tan A and tan B. Hence, evaluate
tan( A-B).
(b) By using compound angle formula, express cos 75° in the form of
ſa-ſo
where a, b and ceR. State the values of a and b.
с
Hence, evaluate cos 150°
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