- #1
Bogrune
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Homework Statement
I took a test in my Precalculus class about 3 weeks ago, and the tests were handed back this week. I saw that I didn't do so well because I was stumped on this equation:
3sinx + 4cosx = 1
Homework Equations
We were to use the following formulas to solve this equation:
sin(A+B)= sinAcosB + cosAsinB
cos(A+B)= cosAcosB - sinAsinB
sin2 + cos2 = 1
The Attempt at a Solution
I tried to apply one of the formulas, but it just didn't make sense:
3sin2x + 4cos2x = 1
I then tried to use the addition identities, but it still didn't make sense since both expressions(3sinx + 4cosx) only have one term. Anyone know how to solve this?