yaali110 yaali110

06-03-2020
Mathematics

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What is the value of sin2a + cos2a + sec2a-tan2a
Please

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amna04352 amna04352

06-03-2020

Answer:

2

Step-by-step explanation:

sin²a + cos²a + sec²a - tan²a

sin²a + cos²a = 1

1 + tan²a = sec²a

So, sec²a - tan²a = 1

sin²a + cos²a + sec²a - tan²a

= 1 + 1 = 2

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