ତ୍ରିକୋଣମିତି Ex 4(a)

ତ୍ରିକୋଣମିତି Ex 4(a) – Study Material Class 10 ଜ୍ୟାମିତି

Study Material Book Q&A Additional Questions

1. 🌟 ବିଶେଷ କୋଣର ମୂଲ୍ୟ (Special Angle Values)

ସମକୋଣୀ ତ୍ରିଭୁଜର ବାହୁମାନଙ୍କ ଅନୁପାତର ସୀମାକୁ ଭିତ୍ତି କରି ଏହି ମୂଲ୍ୟଗୁଡ଼ିକ ନିଆଯାଇଛି:

$0^\circ$ ପାଇଁ: $\sin 0^\circ = 0$
$\cos 0^\circ = 1$
$\tan 0^\circ = 0$
$\sec 0^\circ = 1$
( $\cot 0^\circ$ ଏବଂ $\csc 0^\circ$ ସଂଜ୍ଞାବିହୀନ)
$90^\circ$ ପାଇଁ: $\sin 90^\circ = 1$
$\cos 90^\circ = 0$
$\cot 90^\circ = 0$
$\csc 90^\circ = 1$
( $\tan 90^\circ$ ଏବଂ $\sec 90^\circ$ ସଂଜ୍ଞାବିହୀନ)
$180^\circ$ ପାଇଁ: $\sin 180^\circ = 0$
$\cos 180^\circ = -1$
$\tan 180^\circ = 0$
$\sec 180^\circ = -1$
( $\csc 180^\circ$ ଏବଂ $\cot 180^\circ$ ସଂଜ୍ଞାବିହୀନ)

2. 📝 ଗୁରୁତ୍ୱପୂର୍ଣ୍ଣ ସୂତ୍ରାବଳୀ (Fundamental Formulas)

ସେଟ୍ - A: ଅନୁପୂରକ କୋଣ ( $90^\circ - \theta$ )

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ତ୍ରିକୋଣମିତି Ex 4(a) – Study Material Class 10 ଜ୍ୟାମିତି

1. 🌟 ବିଶେଷ କୋଣର ମୂଲ୍ୟ (Special Angle Values)

2. 📝 ଗୁରୁତ୍ୱପୂର୍ଣ୍ଣ ସୂତ୍ରାବଳୀ (Fundamental Formulas)

ସେଟ୍ - A: ଅନୁପୂରକ କୋଣ (90∘−θ90^\circ - \theta)

ସେଟ୍ - A: ଅନୁପୂରକ କୋଣ ( $90^\circ - \theta$ )