NCERT Class 11-Math's: Exemplar Chapter 3 Trigonometric Functions Part 8
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Match Each Item Given under the Column C1 to Its Correct Answer Given under Column C2
Question 22:
(a) | (i) | ||
(b) | (ii) | ||
(c) | (iii) | ||
(d) | (iv) |
Answer:
(a)
Hence (a) matches with (iv) denoted by
(b)
Hence (b) matches with (i) i.e.,
(c)
Hence (c) matches with (ii) i.e.,
(d)
Hence (d) matches with (iii), i.e., (d) ↔ (iii)
3.3 EXERCISE
Short Answer Type
Question 1:
Answer:
To prove:
As equation on RHS is a simplified expression, so we must opt Left side equation and simplify it further so that we can get
LHS = RHS.
And thus we will be able to prove it.
The expression gives us hint that we use the identity:
to simplify the expression but to use this we need to multiply numerator and denominator with
.
Hence, it is proved that: