how do solve identities
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Answered by
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I used to have the same problem at first....
it was my biggest problem...
but now I m recovering...
just make sure that u are very much known to the formulaes of identities and ratios...
and then always go in the direction to which the proof is needed...
and thus solve ur equation easily:):)
it was my biggest problem...
but now I m recovering...
just make sure that u are very much known to the formulaes of identities and ratios...
and then always go in the direction to which the proof is needed...
and thus solve ur equation easily:):)
kairadas:
did this help u.?if yes then mark it as brainliest:)
Answered by
1
The Pythagorean Identity:
sin2X + cos2X = 1The trig identity that you should never forget: sin2X + cos2X = 1. In this video I show you where it comes from, how to use it in proofs, and how to spot proofs where it might come in handy.
Proofs Using The "Other Two" Pythagorean Identities: tan2X+1 = sec2X &
1+cot2X = csc2XThese two identities show up all the time in trig proofs, but they're really easy to get mixed up (wait, does tan go with sec or csc?). So, in this video I show you a great trick to memorize them so you can write them down at the top of your quiz or test (a practice I highly recommend). I also show you how to spot trig proof problems where they'll come in handy, and work a few examples.
Trig Proofs With Complex FractionsTrig proofs get a lot harder when they don't have exponents in them, since you can't use the Pythagorean Identities on them. Instead, you've got to use the tricks I show you in this video to turn denominators like (1 + sinX) and into expressions like (1 - sin2) where we CAN use the Pythagorean Identities. (If you still remember Algebra 2, you'll recognize this "conjugate trick" as a way we rationalized complex fractions and roots.)
sin2X + cos2X = 1The trig identity that you should never forget: sin2X + cos2X = 1. In this video I show you where it comes from, how to use it in proofs, and how to spot proofs where it might come in handy.
Proofs Using The "Other Two" Pythagorean Identities: tan2X+1 = sec2X &
1+cot2X = csc2XThese two identities show up all the time in trig proofs, but they're really easy to get mixed up (wait, does tan go with sec or csc?). So, in this video I show you a great trick to memorize them so you can write them down at the top of your quiz or test (a practice I highly recommend). I also show you how to spot trig proof problems where they'll come in handy, and work a few examples.
Trig Proofs With Complex FractionsTrig proofs get a lot harder when they don't have exponents in them, since you can't use the Pythagorean Identities on them. Instead, you've got to use the tricks I show you in this video to turn denominators like (1 + sinX) and into expressions like (1 - sin2) where we CAN use the Pythagorean Identities. (If you still remember Algebra 2, you'll recognize this "conjugate trick" as a way we rationalized complex fractions and roots.)
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