Category: Trigonometry

Question Number 121051 by mathocean1 last updated on 05/Nov/20 $$\mathrm{show}\:\mathrm{that} \\ $$$$\underset{\mathrm{x}\rightarrow\mathrm{0}} {\mathrm{lim}}\frac{\mathrm{tanx}}{\mathrm{x}}=\mathrm{1} \\ $$$$ \\ $$$$ \\ $$ Answered by 675480065 last updated on…

Question Number 186577 by Mingma last updated on 06/Feb/23 Answered by mr W last updated on 06/Feb/23 Commented by mr W last updated on 06/Feb/23…

Question Number 120789 by abdelsalamalmukasabe last updated on 02/Nov/20 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 55141 by 0201011563081 last updated on 18/Feb/19 $${prove}\:{the}\:{following}\:{identities} \\ $$$$ \\ $$$${a}.\frac{\mathrm{sin}\:\theta}{\mathrm{1}+\mathrm{cos}\:\mathrm{2}\theta}=\mathrm{tan}\:\theta \\ $$$${b}.\frac{\mathrm{1}−\mathrm{cos}\:\mathrm{2}\theta−\mathrm{sin}\:\theta}{\mathrm{sin}\:\mathrm{2}\theta−\mathrm{cos}\:\theta}=\mathrm{tan}\:\theta \\ $$$${c}.\frac{\mathrm{cos}\:\left({x}+{y}\right)+\mathrm{sin}\:\left({x}−{y}\right)}{\mathrm{cos}\:\mathrm{2}{y}\mathrm{cos}\:\mathrm{2}{x}}=\frac{\mathrm{1}}{\mathrm{cos}\:\left({x}+{y}\right)\mathrm{sin}\:\left({y}−{x}\right)} \\ $$ Commented by math1967 last updated…

Question Number 120614 by TANMAY PANACEA last updated on 01/Nov/20 $${Trigonometry}\: \\ $$ Commented by TANMAY PANACEA last updated on 01/Nov/20 Commented by TANMAY PANACEA…