More precisely, csc(x) = 1/sin(x), so what can you replace csc(80°) by?CrossFit415 said:I'm on mobile so I can't use regular symbols.
Sin80°csc80° = 1 why does this equal one? Is there multiplication involved here?
I know csc = 1/sin
As far as the cosine is concerned, 400° is the same as what standard angle?CrossFit415 said:And I also have trouble doing this...
Cos400° • sec40°= 1 I don't understand how they got one.
No - replace csc80° with 1/sin80°.CrossFit415 said:Replace csc80° with 1/sin? U
CrossFit415 said:I'm on mobile so I can't use regular symbols.
Sin80°csc80° = 1 why does this equal one? Is there multiplication involved here?
I know csc = 1/sin
Mark44 said:As far as the cosine is concerned, 400° is the same as what standard angle?
HallsofIvy said:Yes, so cos(400)= cos(40). Now, what is sec(40) equal to?
The basic trigonometric functions are sine, cosine, and tangent. These functions represent the ratio of the sides of a right triangle and can be used to solve for missing angles or sides.
Trigonometric identities are equations that are true for all values of the variables involved. They are useful in simplifying trigonometric expressions and solving trigonometric equations.
The value of a trigonometric function can be found using a calculator or by using the unit circle. The unit circle is a circle with a radius of 1 and can be used to find the values of the trigonometric functions for different angles.
Trigonometric functions are defined based on the ratios of the sides of a right triangle. The sine function is the ratio of the opposite side to the hypotenuse, cosine is the ratio of the adjacent side to the hypotenuse, and tangent is the ratio of the opposite side to the adjacent side.
The Pythagorean identities are three trigonometric identities that involve the square of trigonometric functions. They are sin²θ + cos²θ = 1, tan²θ + 1 = sec²θ, and cot²θ + 1 = csc²θ. These identities are derived from the Pythagorean theorem.