Question Details

If cosec θ 2 + 4 sin θ 2 = 4 ,  where  0 ° θ 90 ° ,then find the value of θ

Options

A

90°

B

30°

C

45°

D

60°

Show Answer

Correct Answer :

Option C

45°

Solution :

`. ### Data Analysis - **Title/Question:** `

If cosecθ2+4sinθ2=4, where 0°θ90°,then find the value of θ

` Equation: $\csc^2 \theta + 4 \sin^2 \theta = 4$, where $0^\circ \le \theta \le 90^\circ$. - **Options:** `["90°","30°","45°","60°"]` - **Correct Answer/Option:** `["45°"]` ### Math Check: If $\theta = 45^\circ$: $\csc 45^\circ = \sqrt{2} \implies \csc^2 45^\circ = 2$ $\sin 45^\circ = \frac{1}{\sqrt{2}} \implies 4 \sin^2 45^\circ = 4 \times \frac{1}{2} = 2$ $\csc^2 45^\circ + 4 \sin^2 45^\circ = 2 + 2 = 4$. Matches! ### Format Constraints Check: 1. `clean_answer`: `45°` 2. `solution`: HTML/MathML step-by-step solution. 3. Paragraph separation with `

...

`, `
` for line breaks. 4. Line containing a `...` block placed in its own paragraph `

...

` or has a `
` tag before and after it. 5. MathML & Symbol rule: - Output math using HTML ``/`` and MathML ``. - DO NOT use LaTeX ($..$). - DO NOT use HTML hex/decimal entities (`−` or `−`). Use standard raw unicode characters directly: `-`, `+`, `=`, `⇒`, etc. - DO NOT use `display="block"` in `` tags. Omit `display` attribute completely or set `display=""`. 6. Output format: `...` `...

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