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What is the value of tan 48°?

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in Mathematics - Class 10 by (506k points)
What is the value of tan 48°?

(a) Cot 42°

(b) Tan 42°

(c) Tan 16°

(d) Cot 16°

This question was posed to me by my college director while I was bunking the class.

This is a very interesting question from Trigonometric Ratios of Complementary Angles topic in division Trigonometry of Mathematics – Class 10

1 Answer

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Best answer
Correct choice is (a) Cot 42°

Best explanation: All trigonometric ratios are positive in the first quadrant and tan changes to cot when it is 90° or 270°.

Tan 48° = Tan (90° – 42°)

= Cot 42°

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