मराठी

Prove that: 2sin-1 35=tan-1 247

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प्रश्न

Prove that:

`2sin^-1  3/5=tan^-1  24/7`

सिद्धांत
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उत्तर

`2sin^-1  3/5`

= `2tan^-1  3/sqrt(5^2 - 3^2)   ...[sin^-1  p/h = tan^-1  p/sqrt(h^2 - p^2)]`

= `2 tan^-1  3/sqrt(25 - 9)`

= `2 tan^-1  3/sqrt16`

= `2tan^-1  3/4`

= `tan^-1  (2 xx 3/4)/(1 - (3/4)^2)   ...[2tan^-1 x = tan^-1  (2x)/(1 - x^2)]`

= `tan^-1  (3/2)/(1 - 9/16)`

= `tan^-1  (3/2)/((16 - 9)/16)`

= `tan^-1  (3/2)/(7/16)`

= `tan^-1 (3/2 xx 16/7)`

= `tan^-1 (3/1 xx 8/7)`

= `tan^-1  24/7`

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Inverse Trigonometric Functions - Exercise 4.14 [पृष्ठ ११५]

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आर.डी. शर्मा Mathematics Volume 1 and 2 [English] Class 12
पाठ 3 Inverse Trigonometric Functions
Exercise 4.14 | Q 2.01 | पृष्ठ ११५
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