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ON

ELEMENTARY TRIGONOMETRY

BY THE

REV. J. B. LOCK, M.A.

FELLOW OF GONVILLE AND CAIUS COLLEGE, CAMBRIDGE ;

ASSISTANT MASTER AT ETON.

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Cambridge:

PRINTED BY C. J. CLAY AND SON,

AT THE UNIVERSITY PRESS.

PREFACE.

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THE present Work on ELEMENTARY TRIGONOMETRY contains that part of the subject which can veniently be explained without the use of infinite series. It is intended either for class-teaching or for private study. Accordingly the Examples are numerous and for the most part easy. Those which are not original have been selected from the Cambridge and Army Examination Papers of the last

few years.

The Miscellaneous Examples are somewhat more difficult, and should in most cases be postponed until the student reads the subject for the second time.

The order in which the Chapters are read may be varied at the discretion of the Teacher.

The last three Chapters are not required in the Previous Examination of Candidates for Honours at Cambridge.

J. B. L.

ΕΤΟΝ,

March, 1882.

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