prove that tan inverse 3/4 +tan inverse 3/5 -tan inverse 8/19 = pie/4 sin inverse 3/5 +sin inverse 8/17 - Maths - Inverse Trigonometric Functions

Question

prove that

tan inverse 3/4 +tan inverse 3/5 -tan inverse 8/19 = pie/4
sin inverse 3/5 +sin inverse 8/17 = sin inverse 77/ 85
sin inverse 12/13 +cos inverse 4/5 +tan inverse 63 /16 =
pie

Amit Shukla · Accepted Answer

Kindly, refer to the below link for similar query,
Q 2 
https://www meritnation
com/ask-answer/question/prove-that-sin-inverse-3-5-sin-inverse-8-7-sin-inv/inverse-trigonometric-functions/7438557

Q 3 
https://www meritnation
com/ask-answer/question/q-show-that-sin-11213-cos-145-tan-16316/inverse-trigonometric-functions/12518159

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prove that tan inverse 3/4 +tan inverse 3/5 -tan inverse 8/19 = pie/4 sin inverse 3/5 +sin inverse 8/17 = sin inverse 77/ 85 sin inverse 12/13 +cos inverse 4/5 +tan inverse 63 /16 = pie

prove that

tan inverse 3/4 +tan inverse 3/5 -tan inverse 8/19 = pie/4

sin inverse 3/5 +sin inverse 8/17 = sin inverse 77/ 85

sin inverse 12/13 +cos inverse 4/5 +tan inverse 63 /16 = pie