Trigonometric Ratios CBSE NCERT Solutions Chapter 8 Exercise 8.2 Question 1
1. Evaluate the following:
(i) sin 60
cos 30
+ sin 30
cos 60
(ii)
(iii)
)
(iv) (
(v) (
You can check here values of six trigonometric ratios (sin, cos, tan, sec, cot and cosec) for 0, 30, 45, 60 and 90 degrees. You can also learn from this article about how to memorize all the values in an easy way.
Solution (i)
sin 60
cos 30
+ sin 30
cos 60
=
Solution (ii)
=
=
Solution (iii)
)
Solution (iv)
(
Solution (v)
(
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