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Learn Trigonometry, earn certificates with free online courses from Johns Hopkins, UC Irvine, The Open University, UT Austin and other top universities around the world. Read reviews to decide if a class is right for you.
Learn Trigonometry in 10 hours with Tyler Wallace, covering topics from angles, laws of sines and cosines, to polar coordinates and geometric series.
Master Trigonometry with Mario's Math Tutoring in a 9-hour program, covering topics from basic trigonometric identities to complex equations and graphing techniques.
Learn to convert and graph circles in polar form with GreeneMath.com's concise, under 1-hour lesson, covering various scenarios including circles centered at the origin and on the x/y-axis.
Learn to solve oblique triangles using the law of cosines and calculate triangle areas with Heron's formula in under an hour with GreeneMath.com.
Learn to solve trigonometric equations using inverse functions in less than an hour with GreeneMath.com. Understand function composition and work with trigonometric function inverses.
Learn to find the inverse of domain-restricted functions and solve trigonometric equations with GreeneMath.com in under an hour.
Master double-angle, product-to-sum, and sum-to-product identities in under an hour with GreeneMath.com. Learn to find trigonometric function values and verify identities.
Learn sum and difference identities for sine and tangent with GreeneMath.com. Master finding exact function values and verifying trigonometric identities in under an hour.
Master trigonometric identities with Krista King in under an hour. Learn to remember, derive, and apply various identities to simplify trigonometric expressions.
Learn to simplify integrals using trigonometric substitution with Krista King. Understand when and how to use sine, tangent, or secant substitutions in less than an hour.
Master the law of sines ASA and AAS with GreeneMath.com's step-by-step solutions. Less than an hour to enhance your math skills.
Master the law of cosines with GreeneMath.com's step-by-step solutions for oblique triangle problems. Learn to derive Heron's formula and calculate triangle areas. Under 1 hour.
Master the law of sines ambiguous case with GreeneMath.com's step-by-step solutions. Learn to solve 6 types of SSA problems in under an hour.
Master half-angle identities with GreeneMath.com's step-by-step solutions to 13 practice problems in under an hour.
Master double angle, product-to-sum, and sum-to-product identities with GreeneMath.com's step-by-step solutions in under an hour.
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