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otez555 [7]
3 years ago
15

The person who can prove this all question will get the brailiest award

Mathematics
2 answers:
MrRa [10]3 years ago
5 0

Answer:

This only has answer 1. these proofs are really long, so hard to fit them all in one answer.

Step-by-step explanation:

cos^2A+sin^2A=1\\ : Will be used very often so just remember this equality.

1. Multiply (1+SinA)*\frac{CosA}{1-SinA} +\frac{CosA}{1+SinA} *(1-SinA)=2secA\\

When we factor out the terms, we are left with:

  • \frac{CosA}{1-Sin^2A} +\frac{CosA}{1-Sin^2A} =2secA

We then use the rule above and convert it to cos^2A:

  • \frac{1}{CosA} +\frac{1}{CosA} =2secA
  • 2secA=2secA
arlik [135]3 years ago
5 0

Answer:

Step-by-step explanation:

Attached

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