CBSE Class 10 Maths Introduction to Trigonometry
- Sin^2A/2+Sin^2(B+C/2)
- prove that 1+sina-cosa/1+sina+cosa=√1-cos/√1+cosa
- sin teta + 2cos teta =1 prove that 2sin teta - cos teta =2
- Cosec²72° - tan²18°=1
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- Show that … cosec theta minus 2sin cube theta upon 2cos cube theta minus cos theta is equals to tan theta
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