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RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2

June 7, 2019 by Prasanna Leave a Comment

Rajasthan Board RBSE Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2

निम्नलिखित प्रश्नों में पाँच अन्य त्रिकोणमितीय फलनों का मान ज्ञात कीजिए

प्रश्न 1.
cos x = \(-\frac { 1 }{ 2 }\),x तीसरे चतुर्थाश में स्थित है।
हल-
दिया है— cos x = \(-\frac { 1 }{ 2 }\)
हम जानते हैं
sin²x + cos²x = 1
sin²x = 1 – cos²x
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2

प्रश्न 2.
cot x = \(\frac { 3 }{ 2 }\),x तृतीय चतुर्थाश में स्थित है।
हल–
दिया है— cot x = \(\frac { 3 }{ 2 }\)
हम जानते हैं कि
cosec²x = 1 + cot²x
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2

प्रश्न 3.
sec x = \(\frac { 13 }{ 5 }\),x चतुर्थ चतुर्थाश में स्थित है।
हल–
दिया है- sec x = \(\frac { 13 }{ 5 }\)
हम जानते हैं कि sec²x = 1 + tan²x
tan²x = sec²x – 1
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2

मान ज्ञात कीजिए

प्रश्न 4.
sin 765°
हल :
sin 765° = sin (2 x 360° + 45°)
= sin 45° ∵ sin (2πn + θ) = sin θ, ∀x ∈ 1
= \(\frac { 1 }{ \sqrt { 2 } } \)

प्रश्न 5.
tan \(\frac { 19\pi }{ 3 } \)
हल :
tan \(\frac { 19\pi }{ 3 } \)
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2

प्रश्न 6.
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2
हल :
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2

प्रश्न 7.
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2
हल :
RBSE Solutions for Class 11 Maths Chapter 3 त्रिकोणमितीय फलन Ex 3.2

RBSE Solutions for Class 11 Maths

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