Question-201906

Question Number 201906 by sonukgindia last updated on 15/Dec/23

Answered by AST last updated on 15/Dec/23

s i n (x) = \frac{s}{h} \dots (i)

(i i) \dots \frac{s i n (2 x)}{h} = \frac{s i n (x)}{2 s} \Rightarrow 2 s i n (x) = \frac{s i n (x)}{s i n (2 x)}

\Rightarrow s i n (2 x) = \frac{1}{2} \Rightarrow x = 15 °

Answered by mr W last updated on 16/Dec/23

Commented by mr W last updated on 16/Dec/23

A B = B C = 2 \times B E

\sin 2 α = \frac{B E}{A B} = \frac{1}{2}

\Rightarrow 2 α = 30 ° \Rightarrow α = 15 °

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