Question

(find the value of):
inverse Trigonometric function ​

Answer 1

Answer:

195

${cos}^{ - 1} cos(13\pi \div 6) \\ 13\pi \div 6 \\ 13 \times 90 \div 6 \\ 1170 \div 6 \\ 195$

Answer 2

Answer:

cos -1 .cos (13π/6)

1/cos .cos (13π/6)

cos and cos will get cancelled

then the remainder is 13π/6

13×22/7×6

286/42

the answer is 6.809

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