Deuna, Melecio C.
Basic trigonometry for secondary Schools / Melecio C. Deuna, Florita C. Lamaya. - Quezon City : SIBS Pub. House, c1998. - ix, 347 p. : ill.
Includes appendices, glossary, bibliography and index.
9717910391
Trigonometry--Study and teaching (Secondary)
Basic trigonometry for secondary Schools / Melecio C. Deuna, Florita C. Lamaya. - Quezon City : SIBS Pub. House, c1998. - ix, 347 p. : ill.
Includes appendices, glossary, bibliography and index.
9717910391
Trigonometry--Study and teaching (Secondary)