## Answers

Given + tand - secr tanxt secu Take Lom op (tan X-secx) (tanx+secx) - Eltandsecse) + Gultanx-secx) (tand-see 21) (tanx+ Bees) tana & seca -tand-secx We know taña-seca tweet, bacie triguometsie idently is seed - tant = 1 tana - seed=-1

Then - tand - tanx tanx secx 2 tanx hand side = 2tane Right Therefore, = atana tand-seer tanu & secx

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