1. If the angle 0 = -60 find the value of sin ∅.
2. Find the side of a square whose diagonal is 16√2 cm.
3. two circles with radii 4 cm and 3cm touch each other externally find the distance between their centres.
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Answer:
rt means square root here
Step-by-step explanation:
1. sin(-60°)= -sin60°
= -rt3/2
2. diagonal = rt2 a
rt2a = 16rt2
a=16cm
3. r1+ r2 = 4+3= 7cm
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