# trig

posted by
**san-san**
.

Write each identity expression in terms of:1. cos theta= a. sin^2theta

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sec^2theta-1

2. tan theta= a. sec theta over sin theta minus sec theta over cosecant theta.

posted by
**san-san**
.

Write each identity expression in terms of:1. cos theta= a. sin^2theta

----------

sec^2theta-1

2. tan theta= a. sec theta over sin theta minus sec theta over cosecant theta.