2015年4月15日 · This is one of the basic right-angled triangles. In an equilateral triangle each angle is 60^o (and all the sides have equal length) From the image below: we can see that the sin (30^o) = 1/2

Step-by-step explanation: To evaluate the expression sin 30° + tan 45° / sec 30° + cot 45°, let's break it down step by step: sin 30°: The sine of 30° is 0.5. tan 45°: The tangent of 45° is 1. sec 30°: The secant of 30° is the reciprocal of the cosine of 30°. The cosine of 30° is √3/2, so the secant of 30° is 2/√3 or (√3/3) * 2.

2018年5月13日 · cos 30^circ = sin 60^circ because they're complementary angles, so this is sin 30^circ - {cos 30^circ} /{ sin 60^circ} = sin 30^circ - 1 = 1/2 - 1=-1/2 # Yet another 30/60/90 question. Get new a triangle people! I'll assume this is \\sin 30^circ - cos 30^circ /sin 60^circ I'm never really sure because many students forget to add parentheses around the numerator and …

2024年9月22日 · To solve this expression, we'll first convert the secant and cosecant functions to cosine and sine functions, respectively. Then, we'll simplify the expression using the values of the trigonometric functions for the given angles. Step 1: Convert secant and cosecant: * sec (30°) = 1/cos (30°) * cosec (30°) = 1/sin (30°) Step 2: Substitute ...

2014年8月26日 · The graph y=sin (x+30) looks like that of a regular sin graph except it is shifted left by 30 degrees. Explanation: Remember, that when you add or subtract from the angle in a sin graph (the variable), it shifts the graph left or right. Adding to the variable shifts the graph left, subtracting shifts the graph right.

2015年8月6日 · Find the value of sin (-30) Ans: -1/2 sin (-30) = - sin (30). Trig table gives --> sin 30 = 1/2 Therefor, sin (-30) = - 1/2

2018年10月22日 · Answer: the derivative of sin 30 degrees will be zero. Step-by-step explanation: First of all, we need to know what is the value of sin 30 degrees. Step 1:- According to the trigonometric ratio table, the value of sin 30 degrees is 1/2 i.e. 0.5 So, it is a constant value.

2018年5月23日 · Find an answer to your question Find the value of sin 30 degree geometrically.

2016年7月21日 · sin 30^@ = 1/2 Supposing you know the equilateral triangle properties, the typical angle for this triangle, has 60^@ and the bisectrices intersect the oposite side just at their half. So we have sin 30^@ = (l/2)/l = 1/2. Here l represents the triangle side.

2015年9月9日 · 360 - 330 = 30, so we are subtracting 30 degrees from 360 to get the sin inverse, 330. Since we are subtracting from 360, the ratio will remain sin, and because it is in the 4th quadrant, the sin will be negative. Therefore, our answer is −sin(30), or − 1 2 Sorry if this seems confusing, this is how I learnt it.