Answer:
6 = r
Step-by-step explanation:
V = πr³ Use this equation to find the volume of a hemisphere
144π = πr³ Divide both sides by
π
216 = r³ Take the cube root of both sides
6 = r
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Answer:
-1
Step-by-step explanation:
We need to find the value of tan² 70° -sec² 70°.
We know that,
...(1)
We can write the given expression as :
tan² 70° -sec² 70° = -(-tan² 70° +sec² 70°)
=-(sec² 70°-tan² 70°)
Using identity (1)
=-(1)
= -1
Hence, the value of the given expression is -1.