a) Given cos 8 =where 0° s 0 s 90º. Compute each following value without using calculator Diberi cos 8 = where 0 s Øs 90º. Kira nilai tiap yang berikut tanpa menggunakan kalkulator i. tan 0 ii. cosec 0 i. sec 0 iv. sin 20 + cos ? 0

Q: 10. Sec -405 degrees 12. Cot -90 degrees 14. cos 360 degrees  16. sin -225 degrees

A: 10)

Q: Use reference angles to find the exact value of the expression cos 23π/4. Do not use a calculator.

A:

Q: If sin 32º = 28/53, which other trig function has the same value? cos 58º    sin 58º    cos 32º…

A:

Q: Find the exact value of expression sin 240°. Do not use a calculator.

A: Given: sin240∘ we know that  sin180∘+θ=-sinθ

Q: Use reference angles to find the exact value of the expression cos 3π/4. Do not use a calculator.

A: The given angle is in second quadrant, and the value of cosine is negative in second quadrant.

Q: 5) Find the exact values. Do not use a calculator. a. cos 60° + tan 45° – sin 30° b. csc- 4 + sin: 2

A:

Q: 3. Evaluate without calculator a. cos 120 degree. b. sec (pi/3) c. cot ( 19 pi / 6)

A:

Q: Determine the exact value of(sin45°)(cos135°)+(sin240°)(cos30°). Be sure to draw a relevant diagram…

A: Value of the given expression can be found by using following results.  cos…

Q: State the amplitude and period f(t) =cos of cos (3t)

A: Given Find amplitude and period  ft=78cos3t