Question

submultiple angles problem​

Answer 1

how to solve the problems on submultiple angles formula.

1. If sin x = 3/5 and 0 < x <

π

2

, find the value of tan

x

2

Solution:

tan

x

2

=

√

1−cosx

1+cosx

=

√

1−

4

5

1+

4

5

=

√

1

9

=

1

3