Question

If A=30°, BC=20cm in a right angled triangle. Find AC. Class 10th Trigonometry question...​

Answer 1

Step-by-step explanation:

Answer

Draw a right angled △ABC using given instructions:

Here sin30=

AC

BC

2

1

=

20

BC

Or BC=10 cm

By Pythagoras theorem:

(AB)

2

=(AB)

2

−(BC)

2

=(20)

2

−(10)

2

=300

AB=10

3

cm

Answer 2

Answer:

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