Math, asked by BrainlyHelper, 1 year ago

Question 12: Prove 9π/8 - 9/4 sin¯¹ 1/3 = 9/4 sin¯¹ 2√2/3

Class 12 - Math - Inverse Trigonometric Functions

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Answered by Anonymous
13
Refer to the attachment
_________________
Using. cosa/b = sin√b²-a²/b
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Answered by Anonymous
24
★ INVERSE TRIGONOMETRIC FUNCTIONS ★

Let π = @

9@/8 - 9/4sin^-1/3 =

Taking 9/4 common

9/4 [ @/2 - Sin^-1 1/3 ]

9/4 Cos^-1 1/3 = 9/4Sin^-1 √8/3

9/4 Sin^-1 2√2/3

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