Considering only the principal values of the inverse trigonometric functions, the value of 3 2 cos - 1 2 2 +…

Considering only the principal values of the inverse trigonometric functions, the value of 32cos-122+π2+14sin-122π2+π2+tan-12π is _______.

(If the numerical value has more than two decimal places, truncate/round-off the value to TWO decimal places)

 

Solution

32cos-122+π2+14sin-122π2+π2+tan-12π=32tan-1π2+14tan-122ππ2-2+tan-12π

=π2+12tan-1π2-14tan-122π2-π2

=π2+12tan-1π2-14tan-12·π21-π22

=π2+12tan-1π2-14-π+2tan-1π2

=π2+π4=3π4

=2.36

Asked in: JEE Advanced 2022 (Paper 1)

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