A student, wishing to use a calculator to verify the value of sin 30°, enters the infor- mation correctly but gets a display of - 0.98803162. He knows that the display should be 0.5, and he also knows that his calculator is in good working order. What might the problem be?

Q: without a calculator tan(π/3)=

A:

Q: Find solution for sec(40+15) csc(0+25°)

A: The given equation is: sec4θ+15∘=cscθ+25∘ To find the value of θ.

Q: Find sin theta and cos theta, if tan theta = -3 and theta terminates in Q3.

A: Note:-Since you asked multiple questions, according to our policy we can answer only first question…

Q: what would t equal if  sin(t)=   (-sqrt(3))/2 ?

A: what would t equal if  sin(t)=   (-sqrt(3))/2  All the solution possible in the interval 0 to 2π.

Q: a +beta)= cos(alpha+beta)= alpha +beta is in quadrant? sin(alpha-beta)= cos(alpha-beta)=…

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Q: Give the exact value of sec 7π/4 without using a calculator. Provided a detailed explanation of your…

A:

Q: Solve for x: 60 60° 2x- 1 x+ 3 60°

A: guven:

Q: The value of the expression cosec (75° +0)-sec (15° -0)- tan (55° +0)+ cot(35°-0) is

A: cosec75°+θ=sec90°-75°+θ=sec15°-θ

Q: 1 Find two equations (using cosine and sine) for the following: A mass on the end of a spring is at…

A: (a) Given that, The mass is hanging 80 cm from the ground, and it pulled down 60 cm and released at…

Q: Without a calculator, evaluate the following exactly. a) cos-1(1/2) b) cos-1(-1/2) c)…

A: (a). Given,

Q: Compute the exact value of cos (-7π/ 8) . Show work and do not use a calculator.

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Q: find the solution to the equation 4 + 3tanΘ = 7

A: To find the solution of the equation

Q: 9. f for 65° 5/(11x - 17)

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Q: I am having a hard time understanding how to solve for the value without the calculator or with a…

A:

Q: Write one or two complete sentences explaining the error(s) in the solution to this problem V3 = 210…

A:

Q: Given sec(a) = 5/2 and sin(b) = -1/4, and a and b are both in the interval [(3pi)/2, 2pi). Without…

A: Topic-trigonometry

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.