Solve the given expression. 

\(\frac{\sec ^2\left(90^{\circ}-\theta\right)-\cot ^2 \theta}{2\left(\sin ^2 35^{\circ}+\sin ^2 55^{\circ}\right)}\)

This question was previously asked in
SSC CGL 2023 Tier-I Official Paper (Held On: 20 Jul 2023 Shift 1)
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  1. 0.5
  2. 2
  3. 1.5
  4. 1

Answer (Detailed Solution Below)

Option 1 : 0.5
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Detailed Solution

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Calculation:

\(\frac{\sec ^2\left(90^{\circ}-θ\right)-\cot ^2 θ}{2\left(\sin ^2 35^{\circ}+\sin ^2 55^{\circ}\right)}\)

⇒ (cosec2 θ - cot2θ) / 2( (sin235° + cos235°)

⇒ 1 /2 = 0.5

∴ The correct option is 0.5

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