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Prove the following results: (i) $\operatorname{tan}^{-1}(1 / 7)+\tan ^{-1}(1 / 13)=\tan ^{-1}(2 / 9)$ (ii) $\operatorname{sin}^{-1}(12 / 13)+\cos ^{-1}(4 / 5)+\tan ^{-1}(63 / 16)=\pi$
Prove the following results: (i) $\operatorname{tan}^{-1}(1 / 7)+\tan ^{-1}(1 / 13)=\tan ^{-1}(2 / 9)$ (ii) $\operatorname{sin}^{-1}(12 / 13)+\cos ^{-1}(4 / 5)+\tan ^{-1}(63 / 16)=\pi$
CBSE | Class 12 | Exercise 4.11 | Inverse Trigonometric Functions | Maths | RD Sharma
Prove the following results: (i) $\operatorname{tan}^{-1}(1 / 7)+\tan ^{-1}(1 / 13)=\tan ^{-1}(2 / 9)$ (ii) $\operatorname{sin}^{-1}(12 / 13)+\cos ^{-1}(4 / 5)+\tan ^{-1}(63 / 16)=\pi$

$(i)$

RD Sharma Solutions for Class 12 Maths Chapter 4 Inverse Trigonometric Functions Image 55

$(ii)$

LHS

RD Sharma Solutions for Class 12 Maths Chapter 4 Inverse Trigonometric Functions Image 56

RD Sharma Solutions for Class 12 Maths Chapter 4 Inverse Trigonometric Functions Image 57

RD Sharma Solutions for Class 12 Maths Chapter 4 Inverse Trigonometric Functions Image 58

i

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