ABC is a triangle in which AB= 8 cm, BC=5cm and ∠ABC=130°. The point D is the foot of the perpendicular from A to CB produced. State the size of ∠ABD. Calculate i) AD ...

ABC is a triangle in which AB= 8 cm, BC=5cm and ∠ABC=130°. The point D is the foot of the perpendicular from A to CB produced. State the size of ∠ABD. Calculate i) AD ...

A square of side 4m is inscribed in a circle. Without using the Pythagoras theorem( use trigonometry) find the radius of the circle.

I don't want it done using a formula. I want to learn how to do it using cos, tan, sin or sin(a)/A = sin(b)/B, sin(b)/B=sin(c)/C.

Find θ and please explain!!! sin(43)=cos(θ)

Please show all work

Please show all work

Also find the: Amplitude: Period: Phase shift:

find values for sin θ, cos θ, cot θ, csc θ, sec θ (Include a diagram of a right triangle with hypotenuse in standard position)

A table might help

suppose cos theta = 5/9 and 3pi/2<theta<2pi. Sketch theta and theta/2 in standard position and label the intersection of these terminal sides with the unit circle.

Find the limit as x goes to 0: (ln(1+x2)-x(arctan(x)))/(x(sin(x)-x)) At first the fraction found is 0/0, but applying L'Hopitals rule, when differentiated...

Please send me fast your reply

Image 681k

Satellite Problem

1,11,21,1112,3112,211213,312213.

Find the radius of the cirumcircle of an equilateral triangle of side 6cm. I have drawn a diagram but I don't know how to find the radius. Do I need to use any formula pls help!! I need to...

The height, in metres of a nail in a water wheel above the surface of the water, as a function of time, can be modeled by the function h(t) = -sin (Pi over 4 (t-1))+ 2.5, where t is the time in...

The depth of water in a certain area can be estimated by using this equation: h(t)=-4.3cos(pi/6.35(t+1.6))+8.4 A boat requires a depth of 7.2 m to ensure safe...

(0 degrees < theta < 90 degrees)

Precalculus

I don't know how to do this so please can someone help me. This stuff is for ACT PREP MATH!!!!!!!!!

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