Trigonometric Ratios Complementary Angles CBSE NCERT Solutions Chapter 8 Exercise 8.4 Question 2
2. Write all the other trigonometric ratios of
in terms of sec A.
Solution:
We know that
(1)
We know that cos A =
(2)
We know that
Putting (2) in the above equation we get
(3)
We know that
Putting (3) in the above equation, we get
(4)
We know that
Putting (1) in the above equation, we get
(5)
(1), (2), (3), (4) and (5) shows all the other trigonometric ratios of
in terms of sec A.
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