Question

Verify the trigonometric identity. cot(x)sec^4(x)=cot(x)+2tan(x)+tan^3(x)

Answer 1

\[\cot x\sec^4x=\cdots\\
\cot x\left(\sec^2x\right)^2=\cdots\\
\cot x\left(\tan^2x+1\right)^2=\cdots\\
\cot x\left(\tan^4x+2\tan^2x+1\right)=\cdots\]
Distribute the \(\cot x\) and you're done.

Answer 2

LAW OF SINES

Solve the triangle.

B = 73°, b = 15, c = 10

Answer 3

that's what it says lol