✓ Board-verified↻ asked 2×
Mathematics · 2023 · 1 mark
CBSE 2023 · Region 1 · Set 1 · Q9
$\displaystyle \left[\frac{3}{4} \tan ^{2} 30^{\circ}-\sec ^{2} 45^{\circ}+\sin ^{2} 60^{\circ}\right]$ is equal to
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle -1$
More from Introduction to Trigonometry
- The hour-hand of a clock is 6 cm long. The angle swept by it between 7:20 a.m. and 7:55 a.m. is:2023 · asked 3×
- If sin θ= cos θ,(0^°<θ<90^°), then value of ( sec θ · sin θ) is:2024 · asked 3×
- Given that sin 2 α=(√3)/2, the value of sin 3 α is:2026 · asked 3×
- Which of the following statements is true?2025 · asked 3×
- Prove that ( sin A-2 sin^3 A)/(2 cos^3 A- cos A)= tan A OR Prove that sec A(1- sin A)( sec A+ tan A)=1.2023 · asked 3×
- If 2 tan A=3, then the value of (4 sin A+3 cos A)/(4 sin A-3 cos A) is2023 · asked 3×
- If sin 30^° tan 45^°=( sec 60^°)/(k), then the value of k is:2025 · asked 3×
- If 4 cot^2 45^°- sec^2 60^°+ sin^2 60^°+p=3/4, then find the value of p. OR If cos A+ cos^2 A=1, then find…2023 · asked 3×
CBSE Class 10 Mathematics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.