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Jack' s quiz game

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Questions 8

Answers

1
Which one is Pythagorean Identities
\sin^2θ+\cos^2θ=1
\sin(α+β)=\sinα\cosβ+\cosα\sinβ
\cos2θ=2\cos^2θ-1
\cos2θ=\cos^2θ-\sin^2θ
2
Is MATH Interesting?
True
False
3
The first step in solving an equation is simplification
True
False
4
When sinx is 1, the reference angle for x is
270。
180。
90。
0。
5
Simplify the expression \frac{a}{b}+\frac{b}{c}, where a, b, c, d ≠ 0
\frac{a+b}{b+c}
\frac{ac+bc}{bc}
\frac{ac+b^2}{bc}
\frac{a+b}{bc}
6
What is the title for Unit 7
Trigonometry Part Two
Trigonometry Part One
Exponential and Logarithmic Functions
Sequences & Series
7
Which one is Double Angle Identities
\sin ^2θ+\cos ^2θ=1
\tan^2θ+1=\sec^2θ
\sin (α+β)=\sin α\cos β+\cos α\sin β
\cos 2θ=2\cos ^2θ-1
8
Which one is Sum and Difference Identities
\sin (α+β)=\sin α\cos β+\cos α\sin β
\cos2θ=2\cos^2θ-1
\cos 2θ=\cos ^2θ-\sin ^2θ
\sin ^2θ+\cos ^2θ=1