If tan-¹3 + tan-¹x = tan-¹8 then the value of x is equal to
a) π/2
b) π/3
c) π/4
d) -3π/4
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Answer:
None of the above.
Step-by-step explanation:
tan-¹3 +tan-¹x = tan-¹8
=> tan-¹x = tan-¹8 - tan-¹3
=tan-¹{(8-3)/(1+8×3)}
=tan-¹(5/25)
tan-¹x =tan-¹(1/5)
x = 1/5 = 0.2
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