Advertisements
Advertisements
Question
Use tables to find sine of 47° 32'
Numerical
Advertisements
Solution
sin 47° 32' = sin (47° 30' + 2')
= 0.7373 + 0.0004
= 0.7377
shaalaa.com
Is there an error in this question or solution?
Chapter 21: Trigonometrical Identities - Exercise 21 (D) [Page 331]
APPEARS IN
RELATED QUESTIONS
Prove the following trigonometric identities.
(secθ + cosθ) (secθ − cosθ) = tan2θ + sin2θ
Solve.
`cos22/sin68`
Evaluate:
tan(55° - A) - cot(35° + A)
Find the value of x, if sin x = sin 60° cos 30° + cos 60° sin 30°
Prove that:
tan (55° - A) - cot (35° + A)
If A and B are complementary angles, prove that:
`(sinA + sinB)/(sinA - sinB) + (cosB - cosA)/(cosB + cosA) = 2/(2sin^2A - 1)`
If \[\sec\theta = \frac{13}{12}\], find the values of other trigonometric ratios.
If 3 cot θ = 4, find the value of \[\frac{4 \cos \theta - \sin \theta}{2 \cos \theta + \sin \theta}\]
If sin θ =7/25, where θ is an acute angle, find the value of cos θ.
If ∠A = 30°, then tan 2A = ?
