Choose the correct option and justify your choice: 1 - tan245°/1+tan245° = (A) tan 90° (B) 1 (C) sin 45° (D) 0

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1 - tan^245°/1+tan^245° = (A) tan 90° (B) 1 (C) sin 45° (D) 0

Introduction to Trigonometry

Last Post by Raavi Tiwari 4 years ago

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13/06/2021 11:15 am

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Priya123

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Choose the correct option and justify your choice:

1 - tan²45°/1+tan²45° =

(A) tan 90°

(B) 1

(D) 0

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13/06/2021 11:17 am

Raavi Tiwari

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Correct option: (D) 0

Explanation:

Substitute the of tan 45° in the given equation

tan 45° = 1

1-tan²45°/1+tan²45° = (1-1²)/(1+1²)

= 0/2 = 0

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