Question

To prove sin5thitta minus sin7thitta minus sin4thitta plus sin8thitta divide by cos4thitta minus cos5thitta minus cos8thita plus cos7thitta

Answer 1

.04

Explanation:

sin 5∅ - sin 7∅ - sin4∅ + sin8∅ divided by cos 4∅ - cos 5∅ - cos 8∅ + cos 7∅

= sin (5∅ - 7∅ - 4∅ + 8∅) / cos (4∅ - 5∅ - 8∅ + 7∅)

= sin 2∅ / cos -2∅

= .035 / .999 = .04