English, asked by naughtyjehi, 10 months ago

GIVE ALL TRIGNOMETRY IDENTITIES WITH EXAMPLES



MATHEMATHICS CLASS 10
CH.8 TRIGNOMETRY



{ 100 points }

••NEeD QUAliTy aNSwEr ••​

Answers

Answered by Anonymous
61

Answer

The examples are based on the attached figure.

\tt{sin^{2} A + cos^{2} A = 1}

E.g.. \tt{(\frac{BC}{AC})^{2} + (\frac{AB}{AC})^{2} = 1}\\

\tt{sec^{2} A = 1 + tan^{2} A}

E.g.. \tt{(\frac{AC}{AB})^{2} = 1 + (\frac{BC}{AB})^{2}}\\

\tt{cosec^{2} A = 1 + cot^{2} A}

E.g.. \tt{(\frac{AC}{BC})^{2} = 1 + (\frac{AB}{BC})^{2}}\\

Attachments:
Answered by PRATHAMABD
62

Trigonometric Identities :-

sin^2theta+cos^2theta= 1

sin^2theta = 1 - cos^2theta =

\frac{1}{cosec^2theta}

cos^2theta = 1- sin^2theta = \frac{1}{sec^2theta}

tan^2theta + 1 = sec^2theta

cot^2theta+ 1= cosec^2theta

•tanA × cotA = 1

tan^2A × cot^2A

•sinA × cosecA = 1

•cosA × secA = 1

Similar questions