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Tpy6a [65]
2 years ago
15

(1 - cos ß)(1 + cos ß) =1/cosec^2(ß)

Mathematics
1 answer:
iVinArrow [24]2 years ago
5 0

Step-by-step explanation:

L.H.S=(1-cosB)(1+cosB)

=(1-cos^2B). {using (a+b) (a-b)=(a^2-b^2)in second step}

=sin^2B

=1/cosec^2B

Therefore,L.H.S=R.H.S proved

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Answer:

x intercept

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y intercept

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5 0
3 years ago
Sarah is 13 years older than Mike. The sum of their ages is 37. How old is Sarah and how old is Mike? Enter your answer as on or
Blizzard [7]

Answer:

(24,13)

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You collect a total of $75 in donations from three people. The three donations are in the ratio 4 : 4 : 7.
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