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Ans. (b)
Explanation:
katex is not defined
Ans. (b)
Explanation:
katex is not defined
= sec A + tan A - tan A = sec A.
Explanation:
(i) L.H.S.
katex is not defined
= sec θ + tan θ = R.H.S. Hence Proved
Explanation:
Consider,
katex is not defined Hence Proved.
Explanation:
Let P be the point of observation and C, the position of cloud. CN perpendicular from C on the surface of the lake and C‘ be the reflection of the cloud in the lake so that
CN = NC´ = x (say)
Then, PM = 200 m
∴ AN = MP = 200 m
CA = CN – AN
= (x – 200) m
C´A = NC´ + AN
= (x + 200) m
Let PA = y m
Then, in right angled Δ PAC,
katex is not defined
⇒ x+200 = 3(x–200)
⇒ x+200 = 3x–600
⇒ 2x = 800
⇒ x = 400 m
Hence, the height of the cloud = 400 m.
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Download NowChapter No. | Chapter Name |
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Chapter 1 | Goods and Service Tax (GST) |
Chapter 2 | Banking |
Chapter 3 | Shares and Dividends |
Chapter 4 | Linear inequations |
Chapter 5 | Quadratic Equations in one variable |
Chapter 6 | Ratio and proportion |
Chapter 7 | Factorization |
Chapter 8 | Matrices |
Chapter 9 | Arithmetic Progression |
Chapter 10 | Geometric Progression |
Chapter 11 | Coordinate Geometry |
Chapter 12 | Reflection |
Chapter 13 | Similarity |
Chapter 14 | Loci |
Chapter 15 | Circles |
Chapter 16 | Constructions |
Chapter 17 | Mensuration |
Chapter 18 | Trigonometry |
Chapter 19 | Statistics |
Chapter 20 | Probability |
Chapter Wise Important Questions for ICSE Board Class 10 Mathematics |
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Goods and Service Tax (GST) |
Banking |
Shares and Dividends |
Linear inequations |
Quadratic Equations in one variable |
Ratio and proportion |
Factorization |
Matrices |
Arithmetic Progression |
Geometric Progression |
Coordinate Geometry |
Reflection |
Similarity |
Loci |
Circles |
Constructions |
Mensuration |
Trigonometry |
Statistics |
Probability |
CBSE Important Questions Class 10
ICSE Important Questions Class 10
CBSE Important Questions Class 10
ICSE Important Questions Class 10