Use a sum or difference formula to find the exact value of the following. 3n sin cos 15 + cos sin 5 15

Q: Find cos2θ if sinθ=7/25

A: From the given information, sin ϴ = 7/ 25.Known fact,  cos 2ϴ = 1 - 2 sin2 ϴ.

Q: Differentiate y = sin 20 cos 20

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Q: Calculate the exact value of the expression using sum and differences. cos (15°) cos(75°) – sin(15°…

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Q: Find the tan x/2 = (1-cosx)/sinx under the conditions where tanx=-1/3 and cosx >0. Draw a right…

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Q: Simplify the expression: cos²x (1+tan² x) Answer= type your answer...

A: Consider the expression:To Find:Simplify the above expression:

Q: If cos(0 - π/2) 0.54, find sin(- 0)

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Q: sin10 x cos x dx.

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Q: Draw and find the exact value  of these expressions   csc(cos-1 square root of 3 over 2) cot(cos-1…

A: Part (a) given expression

Q: Find the value of cos(pi/7)cos(3pi/7)cos(5pi/7)

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Q: If sec B = 2, find cos2 B.

A: We will find the value of cos^2 B  We know Cos B = 1 / Sec B

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.