Math, asked by pearl0418, 11 months ago

Pls help me!!!!!!!!!!!!!!!!!​

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Answered by ShresthaTheMetalGuy
1

Answer:

As, 1+tan²θ=sec²θ; where θ's are equal

Thus, in 1+tan²3A=sec²42°

i.e., 3A=42

A=14°

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