Area of a triangle & Parallelogram Using Trigonometry
Angle Sum and Difference, Double Angle, Half-Angle Formulas
100
when Sinθ=2/3, find Secθ
What is (3√5)/(5)
100
What is sin^2 + cos^2?
What is 1
100
In triangle ABC, AB is 2.3, BC is 6.2, and AC is 8.1. Find Cos A.
What is 150.6°
100
Find the area of an isosceles triangle whose congruent sides are 16 and has a vertex angle of 40°.
What is 82 sq. units
100
Simplify: SecX Sin2X
2SinX
200
Given Cosθ=12/13, find Secθ.
What is 13/12
200
What is 1+cot^2?
Csc^2
200
In triangle DEF, EF is 171, angle F is 96, and angle D is 72. Find side DE.
Side DE is 178.9
200
In a parallelogram whose area is 1189 sq. units, the obtuse angle of the parallelogram is 155°. If the shorter side has a length of 42, what is the length of the longer side?
What is 67
200
If tanX=(1/3) and tanY=(1/2), find the value of tan(X+Y)
tan(X+Y)=1
300
Given Cscθ=13/5, find Secθ multiplied by Tanθ.
What is 65/144
300
What is tan^2 +1?
Sec^2
300
In Triangle ABC, AB is 56, BC is 68, and AC is 104. Find angle B
Angle B= 53.2°
300
In triangle ABC, side "a" is 85 and angle B is 112°. The entire area of the triangle equals 2995 sq. units. what is the measure of side c.
What is 76
300
Find the exact value of 75°
(√ 6- √ 2)/(4)
400
Triangle ABC is formed. The length of side BC is 4 and the length of AC is 3. Angle A is 90°. Find the value of the six trigonometric functions in relation to angle C.
Side AB=√7
Sin
400
Simplify: CotθCos^2 θ=2Cot θ
Cotθ=0
400
In triangle ABC, AB is 9, BC is 18, and AC is 12. Find angle B.
Angle B= 117.3°
400
In a rhombus, each side is 15, and one angle is 130º. Find the area of the rhombus, to the nearest square unit.
What is 172 sq. units
400
If SinX=4/5, find Cos(2X)
Cos(2X)= -7/25
500
In right triangle ABC, a=8 and b=15. Find the six trig. functions of angle A.